问题描述：
选择（）Isn't he going to join us this evening?____________________.He has much homework to do.
（）Isn't he going to join us this evening?________________.He has much homework to do.
A、Yes,he isn't.
B、Yes,he is.
C、No,he is.
D、No,he isn't.
（）Isn't he going to join us this evening?________________.He has much homework to do.
A、Yes,he isn't.
B、Yes,he is.
C、No,he is.
D、No,he isn't.
问题解答：
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