lack had taught himself physics by the time he was ten years old

lack had taught himself physics by the time he was ten years old He taught english for two months when he was living in germany.taught 可否换成had taught? Mr white_______in this school for20 years before he moved to LondonA has taught B taught C had taught 解释为什么选这个选项 hims hers yours...应该怎么用 Prince is his real name.Prince Rogers Nelson was bornPrince is his real name.Prince Rogers Nelson was born in 1959 in Minneapolis,Minnesota.Both his parents were musical.His father led a jazz band.His mother was a singer.As a child.Prince taught hims By the time she left school ,she ___ that course for ten years.A.taught B.has taught C.had taught D.will have taught 为什么不是用将来完成时? You said that you had suffered from a lack of confidence.这个句子有语法错误吗? Lack anything,lack of how did you learn to drive?10标签:learn,to,drive how did you learn to dirive?my father ( ) me.A taught D had taught.为什么had taught不能选? He told me that he had taught English since he came here.改为直接引语 He had taught English in that school since 2000.可以把that去掉吗 years of school life had taught me a lot要整篇文章!正确地! i _____ professor joned had taught me this questionbelieve deeply think wish suppose 英语翻译i had missed a seat as a result of my lack of organisation.i had had every chance to buy a ticket the day before,while there were still seats available.what is my lack of organization? 有这样一句话：He ______(teach) in this school since he came here last year.横线上填什么好些?到底是had taught. 还是has taught. --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? By the time she left school ,she ___ that course for ten years.A.taught B.has taught C.had taught D.will have taughtby the time不是用将来完成时?