I will have begun to do the work 3 o’clock this afternoon.A.byB.atC.afterD.befor
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I will have begun to do the work ______ 3 o’clock this afternoon.
A.by
B.at
C.after
D.before
试题答案
A
句中will have begun提供了一个关键的解题线索,表明应该表示“将来截止时间”的介词,在本题中只有by有这种用法。