________ you like it or not, you’ll have to give up smoking．

________ you like it or not, you’ll have to give up smoking．

A.If

B.Whether

C.How

D.Why

答案及解析： B

根据后面的or not可知选择B项(whether常和or not连用)。if不能引导让步状语从句，whether…or not无论是否……都……句意为：不管你是否喜欢，你都应该放弃吸烟。