33. They want to see how civilizes (馴化) the animal can ________.

A. experience B. change C. develop D. become

32. Rather than _______ on a crowded bus, he always prefers _____ a bicycle.

A. ride, ride B. riding, ride C. ride, to ride D. to ride, riding

31. Along the paths stood some signs, _________ was written/Keep Off The Grass!/

A. on which B. in which C. which D. that

30. It was _______ the neighbors saw catch the thief.

A. him that B. he that C. said that D. where

29. Whose eyes ________ it that he saw in the darkness

A. was B. were C. is D. are

28. Where was ________ the traffic accident happened last night

A. it that B. it C. the place that D. the place

27. Is this the school _________ you visited some foreigners a few months ago

A. that B. which C. the one D. where

26. Has everything ________ can be done ________

A. what, done B. that, been done C. that, already done D. what, already been done

25. __________ everything he had taken away from him

A. Was B. Should C. Did D. Had

24. ---________ you did

---No, as a matter of fact, i didn't need to.

A. That is what B. what is that C. Is that what D. Is what that