英语三级B级
单选题
I will have begun to do the work __________5 o' clock this afternoon.
A．by
B．at
C．after
D．before
参考答案：A进入在线模考
【译文】到下午5点钟，我将会开始工作。
【考点】by的用法
【解析】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。
【考点】by的用法
【解析】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。
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