A.助动词does/do/did +动词原形, 起加强语气的作用.——青夏教育精英家教网——

摘要：A.助动词does/do/did +动词原形, 起加强语气的作用.

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What Kevin on weekends?

A. is, doing
B. does, do
C. did, do
D. is, do

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What _______ Tina do on her last day off?

A. was B. does C. did D. do

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What __________ Dean __________ last Saturday night?

A. is, doing
B. does, do
C. did, do
D. was, do

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What ______ Tina do on her last day off?

A. was
B. does
C. did
D. do

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---Who cleaned the classroom?

---Mary ________.

A. can B. does C. did D. is

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