( ) the project in time ,the staff were working at weekends.

题目

( ) 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

答案

这句的意思是：为了及时完成这个项目,员工们周末都在加班.
因为主句用的是过去进行时,“正在工作”,说明项目还正在做,并没有完成,所以,选C.
D用的是完成时态,意思是已经完成.不符合句意.