问题
选择题
—We'll go to Qing Yuan Mountain tomorrow. Why _____ join us?
—That's a good idea. [ ]
A. not
B. don't
C. can't
D. didn't
答案
答案：A
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—We'll go to Qing Yuan Mountain tomorrow. Why _____ join us?
—That's a good idea. [ ]
A. not
B. don't
C. can't
D. didn't
答案：A