题目内容

______ the project in time, the staff have been working at weekends since last summer.
A．CompletingB．Having completedC．To have completedD．To complete
D
考查非谓语动词。句意：为了及时完成这些工程，自从去年暑假以来全体员工一直在周末工作。不定式表示具体的将要进行的动作，其逻辑主语为句子主语，结合语境可知选D。
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