They set offa tripLondon.A. on; forB. on; toC. for; toD. for; for

发布时间：2020-08-16 09:49:45


They set off    a trip    London.
A. on; for
B. on; to
C. for; to
D. for; for

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(答案→)A. on; for
B. on; to
C. for; to
D. for; for
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