____ in the queue for half an hour, the old man suddenly realized he had left

题型：同步题难度：来源：

____ in the queue for half an hour, the old man suddenly  realized he had left the cheque in the car.   [     ]
A. Waiting
B. To wait
C. Having waited
D. To have waited

答案

举一反三

You can hardly imagine the once clear canal _____ so seriously polluted that no fish can live in it. [     ]
A. have become
B. having become
C. to have become
D. to become

题型：同步题难度：| 查看答案

___ his work, he started to play the computer games.  [     ]
A. Being finished
B. Having finished
C. Finishing
D. Having been finished

题型：同步题难度：| 查看答案

All the tasks___________ahead of time, they decided to go on holiday for a week. [     ]
A. been fulfilled
B. were fulfilled
C. having been fulfilled
D. had been fulfilled

题型：四川省期末题难度：| 查看答案

_______ from the operation, the patient was advised to stay in hospital for another two weeks.   [     ]
A. Having not fully recovered
B. Being not fully recovered
C. Not having fully recovered
D. Not fully recovering

题型：安徽省月考题难度：| 查看答案

The young man, ______ several attempts to beat the world record in high jumping, decided to have
another try.    [     ]
A. to make
B. making
C. made
D. having made

题型：安徽省月考题难度：| 查看答案