He keeps _____ exercise every morning to keep healthy. [ ]A. do B. to do C.

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He keeps _____ exercise every morning to keep healthy. [ ]
A. do
B. to do
C. does
D. doing

答案

举一反三

I"m very tired. Let"s stop ____ and have a rest. [ ]
A. to walk
B. walking
C. walk
D. to walking

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Mum tells me to keep shoes and clothes every day. [ ]
A. cleaning
B. clean
C. to clean
D. cleaned

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Children love the old man because he"s good at ____ jokes. [ ]
A. saying
B. telling
C. playing
D. making

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I like washing the dishes. Would you mind the dishes? [ ]
A. do
B. did
C. doing
D. does

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I usually get nervous before ______ a big exam. [ ]
A. taking
B. takes
C. taken
D. took

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