----- Perhaps John’s not in. -----. Look the light’s on.A. Yes he can be at home.B. No

问题补充：

----- Perhaps John’s not in.

-----. Look, the light’s on.

A. Yes, he can be at home.

B. No, he couldn’t go out.

C. Yes, he must be at home.

D. No, he needn’t go out.

答案：

A. Yes, he can be at home.

B. No, he couldn’t go out.

(答案→)C. Yes, he must be at home.

D. No, he needn’t go out.

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