In vain ______ to get in touch with the Embassy.A、they triedB、tried theyC、did

游客2023-11-16  23

问题 In vain ______ to get in touch with the Embassy.

选项 A、they tried
B、tried they
C、did they try
D、they have tried

答案 C

解析 考查倒装句的用法。in vain表示否定的意思,类似地,no, little, hardly, seldom等置于句首时句子要部分倒装,即把助动词或情态动词放在主语之前。在此句中,主语为第三人称复数,时态为过去时,助动词应为did,故选C。
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