She often() her homework, but on the evening of April 12 she () TV.
A. does, watches
B. is doing, waches
C. does, watched
D. is doing, was watching
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David said he would stay here until his mother () back.
A. comes
B. will come
C. came
D. would come
The two good friends () until Miss Wu came into the classroom.
A. chated
B. chat
C. are chatting
D. chatted
It () away a moment ago.
A. is flying
B. flyed
C. flew
D. flies
When () your mother () you that blue dress, Mary?
A. does, buy
B. has, bought
C. had, bought
D. did, buy