— Is Jim coming by train? —I’m not sure. He drive his car.A. must B. mayC. needD. Will

问题补充：

— Is Jim coming by train? —I’m not sure. He drive his car.

A. must

B. may

C. need

D. Will

答案：

A. must

(答案→)B. may

C. need

D. Will

解析：句意：吉姆会坐火车来吗？我不确定。他可能会开他的车来。根据后面的回答I’m not sure.可知，应该是表示不确定的猜测；故选B。