Are they coming by train?-they should,but they __not.they like driving their car.

问题描述:

Are they coming by train?-they should,but they __not.they like driving their car.
A must B can C need D may

我也同意上面那位
选D may
他们坐火车来么?
他们应该这样但是未必这样,他们喜欢开车.