31.I think that this problem needs ________ as quickly as po

31.I think that this problem needs ________ as quickly as possible.
A) to solve B) to be solving C) to be solved D) solve
32.Ted has just had a car accident.He will probably be ________ in the future.
A) more careful B) much careful C) so careful D) most careful
33.The sun had hardly risen ________ the fog began to disappear.
A) as B) till C) while D) when
34.With trees,flowers and grass planted everywhere,the city has _______ a new look.
A) looked out B) see through C) shown up D) taken on
35.The foreign couple with their children were found to ________ in the hotel.
A) kill B) be killed C) have been killed D) be killing
36.I ________ an old friend of mine in the street yesterday.
A) went by B) ran into C) look into D) stood by
37.Is it in that factory ________“Red Flag”cars are produced?
A) as B) when C) that D) which
38.Jack speaks to me __ ___ he were my teacher.
A) even though B) if C) even if D) as if
39.He wore a shirt with black and white __ ___.
A) stripes B) stings C) strings D) strips
40.To tell the truth,I’d rather __ ___ to their dinner.
A) to be not invited B) not to be invited
C) don’t be invited D) not be invited
41.Think over our proposal and let me know whether you agree _______ it.
A) for B) in C) with D) at
42.Could you please ________ why you can’t come to attend the meeting?
A) explain B) understand C) give D) discussion
43.It is a fact ________ most deaths from lung cancer are caused by smoking.
A) that B) how C) what D) which
44.The manager's reply ________ that he was not really interested in the project.
A) offered B) showed C) advised D) described
45.She didn't tell the reason _______ she was absent from the important lecture.
A) what B) which C) how D) why

31.C) to be solved
32.A) more careful
33.D) when
34.D) taken on
35.C) have been killed 发生在谓语动词之前 故 用动词不定式的完成式
36.B) ran into
37.C) that
38.D) as if
39.A) stripes
40.D) not be invited
41.C) with
42.A) explain
43.A) that
44.B) showed
45.D) why