On receiving a lunch invitation Befu first has to______.A.decide whether to accept it or

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On receiving a lunch invitation, Befu first has to______.

A.decide whether to accept it or not

B.figure out what he would like to eat

C.pretend to show great surprise

D.judge whether the invitation is serious

请帮忙给出正确答案和分析,谢谢!

热搜:a是b的充分条件,b是a的必要条件吗