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Everythingdependsontheywillsupportyouaboutit.A.ifB.whichC.whetherD.that

题目详情
Everything depends on _______ they will support you about it.
A.if B.which C.whether D.that 
▼优质解答
答案和解析
C 

介词之后的宾语从句不可用if引导,只能用whether。