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时间:2022-09-24 20:04:53
You will have to wait for one more week, _____ the manager will be back from his trip.
A.after
B.while
C.when
D.since
答案及解析: C
when引导的非限定性定语从句,本句中的when =" by" which time,“到那时候”。after和since都错在时间的先后顺序,而while引导时间状语从句不用将来时。