The secretary________letters all the afternoon and there are still two letters t
题型：同步题难度：来源：
| The secretary________letters all the afternoon and there are still two letters to finish. |
| [ ] |
A. is typing
B. had type
C. has been typed
D. has been typing |
答案
| D |
举一反三
__Waiter,what about my food?I________for over 30 minutes.
__Oh,sorry,sir.Just one more minute,please. |
| [ ] |
A．have waited
B．was waiting
C．have been waiting
D．had waited |
—Did you find the missing couple in the mountain yesterday?
—No,but we _____ to get in touch with them ever since. |
| [ ] |
A. have tried
B. have been trying
C. had tried
D. had been trying |
| The secretary________letters all the afternoon and there are still two letters to finish. |
| [ ] |
A. is typing
B. had type
C. has been typed
D. has been typing |
—When is Jack going to finish writing that program?
—I don"t know ______ day in and day out. |
| [ ] |
A. He has been working
B. He has worked
C. He had been working
D. He was working |
—Waiter, what about my food?I________for over 30 minutes.
—Oh, sorry, sir.Just one more minute, please. |
| [ ] |
A. have waited
B. was waiting
C. have been waiting
D. had waited |
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