问题
选择题
______ the project in time, the staff have been working at weekends since last summer.
A.Completing
B.Having completed
C.To have completed
D.To complete
答案
答案: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。