Question

【题目】---Can you come to have dinner with me this evening?

---I’m afraid not. I look after my grandmother. She is ill.

A. canB. have toC. mayD. could

Answer 1

【答案】B

【解析】

句意：——今天晚上你能来和我一起吃晚饭吗？——我恐怕不能。我不得不照看我的外祖母。她病了。考查情态动词和动词短语。A. can能；B. have to不得不，C. may可能；D. could能够。根据句意，是我不得不照看我的外祖母。答案选B。