问题
选择题
—This bus is always late, _____?
—It is sure.[ ]
A. is not it
B. isn't it
C. isn't the bus
D. doesn't it
答案
答案：B
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—This bus is always late, _____?
—It is sure.[ ]
A. is not it
B. isn't it
C. isn't the bus
D. doesn't it
答案：B