---Wouldyoucometomybirthdaypartytomorrowevening?---I’ma...

問題詳情：

---Would you come to my birthday party tomorrow evening?

---I’m afraid I ______. I have to look after my sister.

   A. wouldn’t        B. can’t         C. won’t           D. mustn’t

【回答】

 B

知識點：情態動詞

題型：選擇題