We can eat in the cafeteria, but we ________ eat in the classroom.

1. A.
   don't
2. B.
   didn't
3. C.
   can't
4. D.
   aren't

　　We can eat in the cafeteria, but we ________ eat in the classroom.

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　　We can eat in the cafeteria, but we ________ eat in the classroom.

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