题目内容
3. Mary her homework,but Mike did.
A. didn't do B. doesn’t do
C. will do D. is doing
3. A
3. A but表转折，上文应该是didn't do。
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题目内容
3. Mary her homework,but Mike did.
A. didn't do B. doesn’t do
C. will do D. is doing
3. A but表转折，上文应该是didn't do。