单项选择题

Since his retirement, Peter Smith, who was （）a teacher, has written four novels.

A. lately
B. usually
C. formerly
D. already

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单项选择题

Go and see what your mother is （） now.

A. for
B. at
C. about
D. busy

单项选择题

Mother was so weak after her operation that the doctors wondered if they would be able to （） her through.

A. pull
B. cure
C. push
D. save

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