◎ 题干
We tried  _____ to persuade him to stay home, but at last, he went to the construct site in spite of his illness.

[     ]

A. in vain
B. in return.
C. in fact
D. in time
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“We tried _____ to persuade him to stay home, but at last, he went to the construct site in spite of his illness.[ ]A. in vain B. in return. C. in fact D. i…”主要考查了你对  【介词和介词短语】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。