All possible means ______. However, nothing can _____ his wife dying of lung can
题型：海南省期中题难度：来源：
| All possible means ______. However, nothing can _____ his wife dying of lung cancer. |
| [ ] |
A. has tried; stop
B. have tried; keep
C. have been tried; prevent
D. has been tried; stop |
答案
| C |
举一反三
— When will the expert come and give the lecture on economic development?
— Not until our program ____ by the authorities. |
| [ ] |
A. approves
B. is to approve
C. has been approved
D. will be approved |
| The moment the 28th Olympic Games _______ open, the whole world cheered. |
| [ ] |
A. declared
B. have been declared
C. have declared
D. were declared |
| In the rainforest of the Amazon, 50 to 150 plant species ______ every day. |
| [ ] |
A. are being destroyed
B. are destroying
C. have been destroyed
D. destroyed |
| All flights ___ because of the storm, they had to wait in the hall. |
| [ ] |
A. have put off
B. were put off
C. have been put off
D. having been put off |
Millions of pounds" worth of damage _________ by a storm which swept across the north of
England last night. |
| [ ] |
A. had been caused
B. has been caused
C. will be caused
D. will have been caused |
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