—AreyougoingtoBeijingbyair?—It’sfast,butexpensive.SoI’m...

问题详情：

— Are you going to Beijing by air?

— It’s fast, but expensive. So I’m not sure. I _____ take a train.

A. may       B. will      C. must    D. should

【回答】

A 

知识点：情态动词

题型：选择题