题目内容
— Is your mother still a teacher?
— ______.
- A.Yes, she was
- B.She didn’t use to
- C.No, but she used to
- D.No, but she used to be
D
used to be表示“曾经是……”,与现在有对比之意。to后的be要保留。
used to be表示“曾经是……”,与现在有对比之意。to后的be要保留。
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