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Every possible means ____ to save the wounded soldier up to now.
[ ]
A. was tried
B. were tried
C. have been tried
D. has been tried
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相关题目
This old custom has________ since the 18th century, and remains practically unchanged.
[ ]
A. handed down
B. been handed down
C. handed out
D. been handed out
— 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
This is the second time I _____ by him; I shall never trust him again.
[ ]
A. was put down
B. have been let down
C. have been put down
D. am let down
Since the world heritage list was first created in 1972, many more sites _____ it.
[ ]
A. have added up to
B. are added to
C. have been added up to
D. will be added up to
The doctor_____ my brother for ten years.
[ ]
A. married with
B. has married
C. has been married
D. has been married to
Millions of RMB yuan's worth of damage to the environment ______ by the poisonous chemical
that flew into the river.
[ ]
A. has been caused
B. has caused
C. will be caused
D. caused
What he regrets is that more than a chance _____.
[ ]
A. were given up
B. is given up
C. has been given up
D. have been given up
—Flight 551 for Dallas ________. I must be off now.
—Have a pleasant trip then.
[ ]
A. is being announced
B. has announced
C. was announcing
D. had been announced
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