_____ to reach them on the phone, we sent an email instead. [ ]A. Fail B. Fa

题型：同步题难度：来源：

_____ to reach them on the phone, we sent an email instead.

[ ]

A. Fail
B. Failed
C. To fail
D. Having failed

答案

举一反三

_____ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home.

[ ]

A. To wait
B. Have waited
C. Having waited
D. To have waited

题型：同步题难度：| 查看答案

_____ such great pressure once, she managed it finally.

[ ]

A. Facing
B. Having faced
C. Faced
D. To face

题型：同步题难度：| 查看答案

The storm left, _____ a lot of damage to this area.
A. caused
B. to have caused
C. to cause
D. having caused

题型：同步题难度：| 查看答案

_____ such heavy pollution already, it may now be too late to clean up the river.

[ ]

A. Having suffered
B. Suffering
C. To suffer
D. Suffered

题型：同步题难度：| 查看答案

______ the programme, they have to stay there for another two weeks.

[ ]

A. Not completing
B. Not completed
C. Not having completed
D. Having not completed

题型：同步题难度：| 查看答案