_____ their final medical check, the astronauts boarded their spacecraft. [

题型：模拟题难度：来源：

_____ their final medical check, the astronauts boarded their spacecraft.

[ ]

A. Received
B. Being received
C. To receive
D. Having received

答案

举一反三

_____ back to China, all the staff who had worked in Libya strongly felt that our country is very powerful.

[ ]

A. To fly
B. Flying
C. To be flown
D. Having been flown

题型：模拟题难度：| 查看答案

_____in the queue for half an hour, Tom suddenly realized that he had left his wallet at home. [     ]
A. Waiting
B. Have waited
C. Having waited
D. Waited

题型：河北省期中题难度：| 查看答案

Dina, ______ for months to find a job as a waitress, finally took a position at a local advertising agency. [     ]
A. struggling
B. struggled
C. having struggled
D. to struggle

题型：河北省月考题难度：| 查看答案

_______ in London for so many years, you must learned a lot about English culture. [     ]
A. to live
B. To have lived
C. Having lived
D. Living

题型：浙江省模拟题难度：| 查看答案

_____ the child to bed, she began to correct the pupil"s exercise. [     ]
A. Sending
B. Being sent
C. Having sent
D. Sent

题型：宁夏自治区期末题难度：| 查看答案