my father has taught english ____(since/for/after) over ten years

My father has taught English for ten years My father has been teaching English for ten yearsMy father has taught English for ten yearsMy father has been teaching English for ten years都对吗? my father has taught english ____(since/for/after) over ten years My father taught me math when I was young My father has a nuw My father and mother taught chinese.同义句My parents__________ __________ chinese teachers. iwang li’s father has taught english here since he graduated from peking un My father has d____to give up smoking 翻译My father has lunch at school my father后是加have还是has my father has什么air conditioner my father has什么air conditioner my father has a strong________(person) My father has a healthy b...是什么 My father has a healthy l____ I wish my father has a healthy --Is your father a teacher of English in the NO.1 Middle School?---No!But he ___English there for ten years.A.has taught B.has been teaching C.taught D.had taught为什么不选B? --Is your father a teacher of English in the NO.1 Middle School?---No!But he ___English there for ten years.A.has taught B.has been teaching C.taught D.had taught　答案是C为什么不选B? My father has never been to other countries before.My father has never__ __ before.