46．The visitors saw rows of houses of roofs _________ are red.

A. on which　　　 B. of which　　　 C. where　　　　 D. that

45．China has hundreds of islands, ________ is Taiwan.

A. the largest of which　　　　　 B. of which largest

C. which the largest　　　　　　 D. in which the largest

44．There is a mountain _______ the top is always covered with snow.

A. of that　　　 B. of which　　　 C. its　　　 D. that

43．–Why _____ ask the teacher to explain this math problem?　 --I think _____ to work it out by ourselves.

A. not; better　　　　　　　　 B. don’t we; it better

C. do you not; us better　　　　 D. don’t you; we’d better

42．–How many hours do you think the lecture ______?　 --Oh, it’s hard to say.

A. last　　　 B. will be lasted　　　 C. will last　　　 D. has been lasted

41．–Could you lend me _______ ink?　 --Sorry, I have only ______ myself.

A. a little; some　　 B. any; some　　 C. some; a little　 D. little; little

40．The two beggars struggled ______ each other ______ a big pork there.

A. against; against　　　　　　 B. for; for

C. with; for　　　　　　　　　 D. with; against

39．The clock _______ twelve when I met him.

A. struck　　　　 B. strikes　　　　　 C. hit　　　　 D. stuck

38．The programme is ______ the air. It’s ______.

A. on; alive　　　 B. on; live　　　　 C. over; alive　　　　 D. over; living

37．_____ good _______ to wait in line.

A. It’s; manner　　　　　 B. It’s; manners　　

C. They’re; manners　　　 D. They’re; manner