1,Mr Black had taught in this school by 1970（改为否定句）Mr Black _ _ _ in this school by 19702,By the end of last term, we _ (learn) about three thousand English words.3,He had cleaned the room by eight o'clock yesterday.( 改为一

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1,Mr Black had taught in this school by 1970（改为否定句）Mr Black _ _ _ in this school by 19702,By the end of last term, we _ (learn) about three thousand English words.3,He had cleaned the room by eight o'clock yesterday.( 改为一

1,Mr Black had taught in this school by 1970（改为否定句）Mr Black _ _ _ in this school by 19702,By the end of last term, we _ (learn) about three thousand English words.3,He had cleaned the room by eight o'clock yesterday.( 改为一
1,Mr Black had taught in this school by 1970（改为否定句）
Mr Black _ _ _ in this school by 1970
2,By the end of last term, we _ (learn) about three thousand English words.
3,He had cleaned the room by eight o'clock yesterday.( 改为一般疑问句）
3,_ he _ the room by eight o'clock yesterday?
4,John had seen the film before, _ _ (完成反意疑问句）
希望各位英语高手能指点一下过去完成时的一般疑问句,反意疑问句等怎么写?

1,Mr Black had taught in this school by 1970（改为否定句）Mr Black _ _ _ in this school by 19702,By the end of last term, we _ (learn) about three thousand English words.3,He had cleaned the room by eight o'clock yesterday.( 改为一
1 had not taught
2 had learned
3 Had cleaned
4 hadn't he

1i have had a tremperature[ ]i had a headache.2mr.black has lived in china[ ]five years ago.为什么 英语翻译人名：(1) Mr Bakr (2) Mr Black (3) Mrs Black (4) Mike (5) Tony Mr Black had to （take tom to the hospital） last week 对括号内提问~ Mr Black had to go back,后面填hadn't he?这个是特殊用法吗？ We can't______the city for vacation.Mr Black said we had to be close to nature Mr .Green ____supper with Mr.Black this evening,a:is going to have b:have c:has d:had mr black liked fishverymuch Mr Black is not my____teacher is mr.black. 1,Mr Black had taught in this school by 1970（改为否定句）Mr Black _ _ _ in this school by 19702,By the end of last term, we _ (learn) about three thousand English words.3,He had cleaned the room by eight o'clock yesterday.( 改为一 1,Mr Black had taught in this school by 1970（改为否定句）Mr Black _ _ _ in this school by 19702,By the end of last term, we _ (learn) about three thousand English words.3,He had cleaned the room by eight o'clock yesterday.( 改为一 1i have had a tremperature[ ]i had a headache.2mr.black has lived in china[ ]five years ago.为什么1.a.since b.for c.before d.after2.a,before b.for c./ d.since Mr Black ___(leave) his keys in the office,so he had to wait until his wife ___(come) home. Mrs and Mr Black had a fight about where to go ( ) [spend] there vacation.填他的正确形式 什么 Mr Black is a teacher. Mr.Black一家人的英文, Mr Black & Miss White.翻译. 英语翻译What is Mr Black?