It matters muchmost of your group members support you.A. ifB. whetherC. whatD. that

问题补充：

It matters muchmost of your group members support you.

A. if

B. whether

C. what

D. that

答案：

A. if

(答案→)B. whether

C. what

D. that

解析：本题考查主语从句。句意：重要的是你小组的大多数成员是否支持你。此处whether引导主语从句，it是形式主语。