1、I would appreciate____back this afternoon.

　　A. you to call

　　B. you call

　　C. your calling

　　D. you’re calling

　　2、They consider themselves ____senior to us.

　　A. to be

　　B. be

　　C. being

　　D. been

　　3、Never ____heart, James Watt kept on doing his experiment.

　　A. losing

　　B. to lose

　　C. lose

　　D. to be lost

　　4、____some of the tasks done by man before, computers are sometimes called thinking machines.

　　A. Taking over

　　B. It being a hot day

　　C. To take over

　　D. To be taken over

　　5、The news was ____to us all.

　　A. surprised

　　B. surprising

　　C. to be surprised

　　D. so surprised

　　6、____in the forest, we had to spend quite a number of hours in making our way out.

　　A. Lost

　　B. Losing

　　C. To lose

　　D. Having lost

　　7、I feel it an honor ____to speak here.

　　A. to ask

　　B. to be asked

　　C. asking

　　D. having asked

　　8、We must not pretend ____what we do not know.

　　A. knowing

　　B. to know

　　C. having know

　　D. know

　　9、- I'd like to buy a good camera.

　　- Well, we have several models ____.

　　A. to choose from

　　B. of choice

　　C. to be chosen

　　D. for choosing

　　10、There was so much noise that the speaker couldn't make himself ____

　　A. hearing

　　B. to hear

　　C. being heard

　　D. heard

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