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Tom hid himself behind the door, _________ he could hear the steps of his mother clearly.

A. from which            B. from where                     C. where                               D. which       

---Harry, we want to know your view about the reform being carried out in our school.

---OK. I ________ to that.

A. am coming            B. have come                       C. came                                 D. come

The charity sale our school organizes every year has taught us much that we would never have________ learned in class.

A. therefore                        B. meanwhile                       C. otherwise                        D. instead

---I hear you won the prize in the English contest last week.

  ---That was the second time I ________ the prize.

A. had got                   B. got                                     C. get                                     D. have got

A great number of people have stopped buying the product ________ the fact that it is safe.

A. for fear of             B. on account of                  C. in spite of               D. as a result of

 Nature is at its most beautiful in spring ________ all kinds of flowers are in blossom, _______ attracts people from all walks of life to take a spring outing.

A. when; which                   B. which; where                  C. when; that                       D. that; which 

 Experts say ________ to sunlight for too much time will do harm to one’s skin.

A. exposed                           B. having exposed              C. being exposed                D. exposing

Exciting as its special effects are ________, there is too much violence in the film.

A. to watch                     B. to be watched                C. watching                          D. being watched

 Two years ago, three scientists traveled to the Antarctica to explore a secret world hidden _________ the ice.

A. among                     B. beneath        C. beyond     D. opposite

 It is recommended that you ________ your accommodation in advance in tourist season, as you may find all the best hotels are not accessible.

A. book                        B. must book                        C. will book                          D. shall book