单选题
When Jack arrived he learned Mary ______ for almost an hour.
A、
had gone
B、
had set off
C、
had left
D、
had been away
【正确答案】
D
【答案解析】
本题测试语法结构。for almost an hour 为时间段,所以动词也必须为持续性动词,go, set。off 和 leave 均为终止性动词。本句大意为:杰克到达时得知玛丽已离开差不多一小时了。
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