— Is Mr. Green really very ill?—. He has to stay at home for a good rest.A. I don’t think

问题补充：

— Is Mr. Green really very ill?

—. He has to stay at home for a good rest.

A. I don’t think so

B. No, he isn’t

C. I hope so

D. I’m afraid so

答案：

A. I don’t think so

B. No, he isn’t

C. I hope so

(答案→)D. I’m afraid so

解析：本题的问句含义是格林先生病的很严重吗？回答语后半句的含义为他必须待在家里好好休息，所以用我恐怕如此，我恐怕他病的很严重意思较符合句意，I’m afraid so表示我恐怕如此的意思，so可用来代替上文出现的单词，词语或句子，故本题选D。