为什么用while?i like to read newspapers after supper (while) my

I like to read newspapers after supper __B_ my wife likes to watch TVA。when B。while C。though这个题只能选while。这里的用法是【表示对比转折】,意思是【而；然而】,经常用于不同行为主体的情况对比。例如;Tom likes playing basketball【 while】 his brother likes dancing。when 当、、、、、时；突然,就在那时 引导时间状语从句though 尽管；虽然 引导让步状语从句祝你开心如意!