题目内容
—Excuse me, have you got an eraser?
—Sorry, I haven't. Why _____ you ask Mary? Perhaps she's got one.
—Sorry, I haven't. Why _____ you ask Mary? Perhaps she's got one.
[ ]
A. do
B. don't
C. did
D. didn't
B. don't
C. did
D. didn't
B
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