—I have telephoned him twice but I couldn’t get through.—I think that the line be being

问题补充：

—I have telephoned him twice but I couldn’t get through.

—I think that the line be being worked on today.

A. should

B. might

C. need

D. would

答案：

A. should

(答案→)B. might

C. need

D. would

解析：句意：--我已经打了两次电话给他，但是都没有接通。--我想今天线路可能很忙。用might表示不确定的推测，should应该，need需要，would将会，所以选B。