521. (2) Only a shrewd man could see through the trick       540. (3) Superlative Degree (Most recognizable) is the right
     is the right sentence.                                       usage with Def. Art. (the)
522. (4) No improvement                                      541. (2) unless (Conj.) : used for saying that something
523. (2) Your success depends on your ability of hard             can only happen or be true in a particular situation
     work is the right sentence                                 l You cannot pass unless you study.
524. (1) I wish I knew what was wrong with my car is the          as long as (Idioms) : only if
     right sentence                                             l You cannot pass as long as you do not study.
     ‘wish’ is followed by Simple Past Tense ‘was’                provided (Conj.) : used for saying that must happen
525. (3) Amar, who is a poet, wrote this poem just be-            or be done to make it possible for something else to
     fore he died is the right sentence                           happen ; if
526. (1) rise (Verb) : to reach a higher level or position      l You can pass provided you study.
   l The river has risen several metres                           Here, unless is the right usage.
     raise (Verb) : to lift or move something to a higher    542. (2) dangling (Verb) : to hang or swing freely
     level                                                        Here, dangling is the right usage.
     The flag will be raised on the 15th of August is the    543. (1) A buffalo cannot defend another buffalo against
     right sentence.                                              a lion is the right sentence
527. (2) have (Present Simple) ® had (Simple Past) ®         544. (1) I sat down on the bench to look at the trophy I
     had (Past Participle)                                        had won as a prize is the right sentence
   l If I had the money, I would have bought the house       545. (3) Had the room been brighter, Shweta would have
     is the right sentence.                                       been able to read for a while before bedtime is the
528. (3) on (Prep.) : in/into a position covering, touching       right sentence.
     or forming part of a surface                            546. (3) Both .... and ® emphasize the link between two
   l She climbed on to the bed.                                   things (tea and coffee) making a stronger connection.
     in (Prep.) : used for describing physical surroundings       Hence, both tea and coffee is the right usage.
   l We went out in the rain.                                547. (3) demolishing (Verb) : to pull or knock down a build-
     beside (Prep.) : next to ; by the side of                    ing
   l She was sitting beside me.                                   bringing down (Phr. V.) : to reduce something
     Here, on (Prep.) is the right usage.                       l We aim to bring down prices on all our computers.
529. (4) No improvement                                           destroying (Verb) : to damage something so badly
530. (2) As a contrast ® out of jail ® free man is evident,       that it no longer exists, works, etc.
     but (Conj.) will be used.                                  l The building was completely destroyed by fire.
     Hence, but not exactly a free man is the right usage.        damaging (Verb) : to harm or spoil something
531. (4) No improvement                                         l The fire badly damaged the town hall.
532. (3) Use of double Subjects (Sushma, she) is super-           Here, demolishing is the right usage.
     fluous.                                                 548. (3) had been (Past Perfect Continuous Tense) is the
     Hence, a good sense of humour is the right usage.            right usage.
533. (1) pulled down (Phr.V.) : to destroy a building com-   549. (1) during (Pre.) : all through a period of time.
     pletely ; demolish                                           after the (Prep.) : following something in time
     knock down (something) (Phr.V.) : to destroy a build-        at the end of : the final part of a period of time, an
     ing by breaking its walls ; demolish                         event, etc.
     Here, pulled down is the right usage.                        Here, during the is the right usage.
534. (3) gentry (Noun) : people belonging to a high social   550. (1) just as normal children do is the right usage.
     class ® used with a Plural Verb (were invited) is the   551. (1) too (Adv.) : very ; extremely
     right usage.                                                 too glad to ® gives a negative sense.
535. (4) No improvement                                           So, very glad is the right usage.
536. (2) Here, even in a little quantity is the right usage. 552. (3) vain (Adj.) : useless
537. (3) The sentence structure will be as follows :              vane (Noun) : a flat blade, moved by wind/water
     If you were (Simple Past) ....., would you + take            (windmill)
     (Simple Past) ....                                           vein (Noun) : any of the tubes that carry blood from
     Hence, would you take is the right usage.                    all the parts of the body to.
538. (1) It is a general statement.                               wane (Verb) : fade ; decrease
     Hence, Simple Present Tense-does not understand              Here, vain is the right usage.
     even is the right usage.                                553. (2) can (Mod.V.) (Simple Present) is the right usage
539. (3) One of my neighbours, who is going abroad will           as the Main Clause is in Simple Present Tense.
     sell his house is the right sentence                    554. (2) passed (Verb) : to move past or to the other side of
     Position of who (Relative Pro.) is changed                   something/somebody