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[Issue Essay]

试题详情

题目:

Analytical!

选项:

答案:

提问:

这一题,主要区别在于by trying to与in trying to,为何in trying to好与 by呢? 还有一个区别是划线最后的have had to与have themselves to之间的区别,为何这里不能用have themselves to呢?尤其是在划线前面已经出现了have themselves to的情况下?

解答:

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解答: 王文静

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