Last week two engineers ______ to help solve the technical problems of the proje

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问题 Last week two engineers ______ to help solve the technical problems of the project.

选项 A、have sent
B、were sent
C、sent
D、had sent

答案 B

解析本题考查对时态和语态的掌握。根据句意“上周两名工程师被派去帮助解决该工程的技术问题”可知，工程师是被派去帮助解决，且时间是上周，因此要用过去时态的被动形式。

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