Completed
Completing
Having completed
To have completed
第1题：
A.is being completed
B.it completed
C.completed
D.it completes
第2题：
A、over
B、on
C、in
D、at
第3题：
I have a lot of readings _____ before the end of this term.
A. completing
B. to complete
C. completed
D. being completed
本题考查非谓语动词的使用。句意应为“这个学期结束前，我要做很多阅读练习。”由于时间状语before the end of this term表达未来的时间，所以空格处使用动词不定式表示将来，充当readings的定语。
第4题：
A.Completed，Deposited，Released，Shipped
B.Completed，Released，Shipped，Deposited
C.Deposited，Released，Shipped，Completed
D.Released，Shipped，Completed，Deposited
E.Released，Shipped，Deposited，Completed
第5题：
A. being completed
B. to be completed
C. is completed
D. completed
第6题：
The rocket will weigh about 200 tons when _____.
A. being completed
B. completed
C. completing
D. have been completed
第7题：
A. is complete
B. will completed
C. has completed
D. will be completed
第8题：
The new multipurpose gymnasium is reported to _______ within two years.
A. have completed
B. have been completed
C. having completed
D. having been completed
第9题：
A、hadn t had completed
B、didn t have completed
C、couldn t have completed
D、cannot have completed
第10题：
( )the project in time, the staff were working at weekends.
A． Competing
B． Having completed
C． To have completed
D． To complete