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( ) the project in time ,the staff were working at weekends.A、Comepleting B、Having completed C、To have completed D、To complete为什么选D而不选C
题目内容：
( ) the project in time ,the staff were working at weekends.
A、Comepleting B、Having completed C、To have completed D、To complete
为什么选D而不选C
( ) the project in time ,the staff were working at weekends.
A、Comepleting B、Having completed C、To have completed D、To complete
为什么选D而不选C
A、Comepleting B、Having completed C、To have completed D、To complete
为什么选D而不选C
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