Question

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

A.Competing
B.Having completed
C.To have completed
D.To complete

Answer 1

【答案】：D

【答案】D。解析：考查非谓语动词。不定式作目的状语，由后句“the staff were working at weekends．"可知，在周末一直在工作的目的就是按时完成工程，故选D。