问题
选择题
They promise that the work would all be finished _____ next week.
A．until
B．in
C．by
D．to
答案
答案：C
by 意为“最迟到……之前，到……的时候已经”。
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They promise that the work would all be finished _____ next week.
A．until
B．in
C．by
D．to
答案：C
by 意为“最迟到……之前，到……的时候已经”。