I _____ my homework when the door bell _____. [ ]A. did; rang B. was doi
题型:同步题难度:来源:
I _____ my homework when the door bell _____. |
[ ] |
A. did; rang B. was doing; was ringing C. did; was ring D. was doing; rang |
答案
D |
举一反三
What _____ you _____ from 6:30 to 8:30 yesterday evening? |
[ ] |
A. were; doing B. was; doing C. did; do D. have; done |
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[ ] |
A. had B. have C. was having D. am having |
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[ ] |
A. is helping B. helps C. was helping D. helped |
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[ ] |
A. worked B. work C. are working D. were working |
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[ ] |
A. was; doing B. were; doing C. is; doing D. did; do |
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