------It took me about 40 minutes to ride here.------Have a drink please. You be thirsty

问题补充：

------It took me about 40 minutes to ride here.

------Have a drink ,please. You be thirsty.

A. will

B. should

C. must

D. might

答案：

A. will

B. should

(答案→)C. must

D. might

解析：句意：--骑车到这花了我大约四十分钟.—请喝点东西吧,你一定很渴了。 will 将要；should 应该； must 必须，一定；might 可能。结合语境可知，选C。