There are 51 students in Class Three failed in the test. A. all of whichB. all of themC.

问题补充：

There are 51 students in Class Three, failed in the test.

A. all of which

B. all of them

C. none of whom

D. none of them

答案：

A. all of which

B. all of them

(答案→)C. none of whom

D. none of them

解析：可联系答.案.网客服索取。