It is usually warm in my hometown in March but it be rather cold sometimes.A. mustB. canC

问题补充：

It is usually warm in my hometown in March, but it be rather cold sometimes.

A. must

B. can

C. should

D. would

答案：

A. must

(答案→)B. can

C. should

D. would

解析：此题考查情态动词的基本用法。Must必须;can能;should 应该; would将要.句意:在我家乡三月通常很暖和,但是有时可能相当冷.结合语境可知选B.