Mother wanted to be a good provider, a role she _____ since her marriage to Fath
题型：专项题难度：来源：
| 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 |
答案
举一反三
| We _____ on this project for four hours. Let"s have a rest. |
A. are working
B. have been working
C. worked
D. had worked |
| I have to see the doctor because I _____ a lot lately. |
A. have been coughing
B. had coughed
C. coughed
D. cough |
— I"m sure Andrew will win the first prize in the final.
— I think so. He ______ for it for months. |
A. is preparing
B. was preparing
C. has been preparing
D. had been preparing |
— Bob! How"s your project? I heard you started it last Friday, right?
— Oh! I _____ for it. But I haven"t decided when to do it. |
A. have prepared
B. had prepared
C. have been preparing
D. was preparing |
| It"s nice to see you again. What _____ since we last met? |
| [ ] |
A. have you done
B. had you done
C. have you been doing
D. did you do |
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