John couldn’t finish his words something had struck his throat.A. thoughB. as thoughC. wh

问题补充：

John couldn’t finish his words something had struck his throat.

A. though

B. as though

C. when

D. since

答案：

A. though

(答案→)B. as though

C. when

D. since

解析： as though“仿佛……一样；好像……似的”，其他选项不符合句意。