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13.______ the project in time,the staff were working at weekends.(  )
A.CompletingB.Having completed
C.To completeD.To have completed

分析 为了及时完成项目,全体员工在周末也加班.

解答 答案:C.
根据后面的句子the staff were working at weekends可知,员工加班是为了及时完成任务,前面为不定式表示目的;故选C.

点评 本句考查不定式作目的状语,相当于in order to,前后的逻辑关系是判断非谓语动词的一个依据.

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