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-Are you a teacher? -No, but I . [ ] A. used to B. was used to C. used to be D.

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-Are you a teacher? -No, but I . [ ] A. used to B. was used to C. used to be D.

-Are you a teacher?

-No, but I ________.

[]A.

used to

B.

was used to

C.

used to be

D.

used to do

试题答案

答案:C