All flights ____ because of the snowstorm, many passengers could do nothing but take the train.
| A．had been canceled | B．have been canceled |
| C．having been canceled | D．being canceled |
相关试题
I have made great progress ________ his help. Which of the following is not correct?
| A．with | B．because of | C．as a result of | D．because |
It was the first time ________ I ________ face to face with a thunder storm.
| A．when / had come | B．that / have come | C．when / came | D．that / had come |
The little boy felt grateful ________ the coach for his letting him ________ the game.
| A．for / join in | B．to / to join in | C．with / join | D．to / join in |
The chairman asked many questions ________ the education 
of the homeless children in that area.
| A．concerned | B．concerning | C．to concern | D．having concerned |
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