The two men talked in a low voice nobody heard what they were saying.A. so thatB. as ifC.

问题补充：

The two men talked in a low voice, nobody heard what they were saying.

A. so that

B. as if

C. because

D. when

答案：

(答案→)A. so that

B. as if

C. because

D. when

解析：考察连词的用法A. so that 以便引导目的状语从句 B. as if好像引导方式状语从句C. Because因为引导原因状语从句D .when当--时引导时间状语从句

句意：那两个人把说话声音放得很小，目的是没人能听到他们讲话的内容

考点:考察连词的用法