Tom and John seldom go to the library in the evening, _____?
A. do they
B. don’t they
C. are they
D. aren’t they
A. do they
B. don’t they
C. are they
D. aren’t they
【答案】
A. do they
B. don’t they
C. are they
D. aren’t they
A. do they
B. don’t they
C. are they
D. aren’t they
【答案】
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