问题
选择题
What is Tom up to? He's seldom turned in his assignments these days, ________?[ ]
A. is he
B. isn't he
C. has he
D. hasn't he
答案
答案：C
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What is Tom up to? He's seldom turned in his assignments these days, ________?[ ]
A. is he
B. isn't he
C. has he
D. hasn't he
答案：C