问题
选择题
—It's too difficult for you to answer.
—Why ____ the teacher for help?[ ]
A. don't ask
B. not ask
C. not wait
D. don't wait
答案
答案：B
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—It's too difficult for you to answer.
—Why ____ the teacher for help?[ ]
A. don't ask
B. not ask
C. not wait
D. don't wait
答案：B