-I walk such a long way on such a hot day .-Oh dear ! You be tired and thirsty. Sit down

问题补充：

-I walk such a long way on such a hot day .

-Oh, dear ! You be tired and thirsty. Sit down and have a drink.

A. can

B. must

C. may

D. should

答案：

A. can

(答案→)B. must

C. may

D. should

解析：can能，可能；must必须，一定；may可以，可能，语气弱于can；should应该。句意：在这么热的天气里，我走了如此长的一段路。——哦，亲爱的！你一定又累又渴了吧！坐下来喝杯饮料吧！结合语境可知选B。