John,there is nothing serious with you,________? No,_____. I just fell off my bike.

John,there is nothing serious with you,________? No,_____. I just fell off my bike.

题目
John,there is nothing serious with you,________? No,_____. I just fell off my bike.
A. is it, it isn't B.is there;there isn't C.isn't it,it is. D.isn't there,there is.
快帮忙啊 谢谢拉
答案
B
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