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15.It's good manners to wait ___ line?
A.in B.on C.at D.with
[答案] A.
[析] in line 为排队。
16.How many English words had you learnt ___ last term?
A.by the end of B.at the end of
C.to the end of D.till the end of
[答案] A.
[析] by the end of 为动作的截止时间，与完成时态相配合
17.The manager was very satisfied ___ his work?
A.in B.on C.about D.with
[答案] D.
[析] be satisfied with 为固定搭配。
18.John hit Jack ___ face
A.on the B.in the C.on his D.in his
[答案] B.
[析] 英文中的某些动词其后要接人，然后加介词+the+身体部位，如：He caught the boy by the arm。
19.I was born ___ the night ___ September 15,1978?
A.in， on B.at， on C.at， in D.on， of
[答案] D.
[析] 在时间前加介词时应以最小的时间单位为准。
20.It's a bad manner to laugh ___ people when they are ___ trouble?
A.over， in B.at， in C.in， at D.at， for
[答案] B.
[析] laugh at 嘲笑某人， laugh over 笑着谈论某人或某事， in trouble 陷入困境。
21.I can't do this work well ___ Tom's help
A.under B.for C.without D.from
[答案] C.
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