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I’mverygratefultoyoubecauseyouhavetakentoshowmehowtodothework.A.effortsB.painsC.attemptsD.difficulties

题目详情

 I’m very grateful to you because you have taken _____ to show me how to do the work.

    A. efforts      B. pains            C. attempts     D. difficulties

 

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答案和解析

 B 。 take pains to do sth 不辞劳苦地做某事。 Great pains have been taken to ensure the safety of passengers. 为确保乘客安全而不遗余力。