He doesn`t b什么his teeth before he goes to bed

He doesn`t b什么his teeth before he goes to bed He ______ finished his homework yet.A.doesn’t B.haven’t C.hasn’t D.doesn’t have Doesn't he take after his father! He often doesn't his homework.(改错) He doesn't do his homework every day.-His homework__by him every day.A.doesn't be done B.isn't done为什么选B? i don't think he put his heart into his study ,______?A.does he B.didn't he C.did he D.doesn't he have no finished his homework,he doesn't finish his homework,he didn't finish his homework有什么区别? He doesn't ___have foreigners in his cafe. A.soon B.seldom C.often D.sometimes 题目是这样的:Jack will go to meet his friend,____?A.isn't he B.doesn't he C.didn't he D.won't he Maybe he put it in his pocket , ______ he? A. dose B.doesn't C.did D.didn;t Maybe he put it in his pocket,______ he?　　A.does 　　　B.doesn’t 　　C.did 　　　D.didn‘t为什么 Mike doesn't like doing his homework,he is so l______.l______横线上填什么 Tony say he doesn't like his cousin 这句话有什么错误? 括号里填什么词?He doesn't ( )a big head but his feet ( ) big TOM doesn't meet his teacher at school.He( )meets his classmates.A.doesnt B.always C.only D.can his aunt knows little about english,___?A.doesn't he B does he C doesn't she D does she Maybe he put it in his pocket,____he?A.does B.doesn'tC.didD.didn't选什么并说明理由． He doesn't like dancing,but his sister____.A,is B.likes C,does答案是选Cdoes.请问这个是做什么语法来解释的呢?