I won"t tell the student the answer to the math problem until he _____ on it for

I won"t tell the student the answer to the math problem until he _____ on it for

题型:湖北省高考真题难度:来源:
I won"t tell the student the answer to the math problem until he _____ on it for more than an hour.
A. has been working
B. will have worked
C. will have been working
D. had worked
答案
举一反三
I have to see the doctor because I _____ a lot lately.
A. have been coughing
B. had coughed
C. coughed
D. cough
题型:陕西省高考真题难度:| 查看答案
Police are now searching for a woman who is reported to ____ since the flood hit the area last Friday.
A. have been missing
B. have got lost
C. be missing
D. get lost
题型:山东省高考真题难度:| 查看答案
Mother wanted to be a good provider, a role she ______ since her marriage to Father. [     ]
A. shoulders
B. shouldered
C. is shouldering
D. has been shouldering
题型:江西省高考真题难度:| 查看答案
Cathy is taking notes of the grammatical rules in class at Sunshine School, where she _____ English for a
year. [     ]
A. studies
B. studied
C. is studying
D. has been studying
题型:湖南省高考真题难度:| 查看答案
— I have got a headache.
— No wonder. You _____ in front of that computer too long.

[     ]

A. work
B. are working
C. have been working
D. worked
题型:江西省高考真题难度:| 查看答案
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