题目内容：

are going to have a singing party tonight.Would you like to join us?_____.选项:a
We are going to have a singing party tonight.Would you like to join us?_____.
选项:
a、I'm afraid not,because I have to go to an important meeting
b、Of course not.I have no idea
c、No,I can't
d、That's all set

优质解答

选a
问题是：我们明天要举行一个歌唱类的聚会,你能来参加吗?需要选择回答项.
答案a：恐怕不行,我明天有一个重要会议要参加.
答案b：当然不行,我没意见.（答案前后意思不符,且不礼貌）
答案c：不,我不能.（情态动词与提问不符,且非常不礼貌）
答案d：都安置好了.（与语境不符）