题目内容
Tom me into giving up all plans for three weeks, but he failed at last.
| A．tried to persuade | B．had tried to persuade |
| C．persuaded | D．had persuaded |
B
解析试题分析：考查时态和词组：try to persuade 尽力劝说，结果未知，强调动作； persuade 劝说（成功） ，强调结果。 根据句意，汤姆想说服我放弃三个星期的计划，但是最后失败了。从后面的but he failed at last.
可知主句应用过去完成时。选B。
考点：考查时态和词组
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| A．is finished | B．has finished | C．will finish | D．will have been finished |
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| A．had melted | B．has been melting | C．melted | D．is melting |
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| A．serves | B．served | C．has served | D．had served |
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| A．has given | B．will given | C．will have given | D．Gave |
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| A．has worn | B．was wearing | C．wears | D．is wearing |
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| A．just help out | B．have just helped out |
| C．am just helping out | D．will just help out |
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| A．built | B．build | C．being built | D．being build |
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