50 years ago,There ( )no subwaya,was b,were

There w___many people 50 years ago,e_____ There was a subway 50 years ago? 50 years ago,There ( )no subwaya,was b,were bridges,few,there,ago,were,a,50,years Are there many factories in shenzhen 50 years ago no,there are not,改错误快 i have been there 3 years ago 还是i have been there for 3 years ago There was a subway 50 years ago.(一般疑问句,并作否定回答)好急,.. 50 years ago,there weren't many people-----.A.too B.C.either D.also are there many factories in shenzhen 50 years ago?这句话错在哪里? 怎样填补( )There not any ferries or piers 50 years ago. 找出错误,并改正There were no factories 50 years ago.There weren’t many people also.快. there is______water pollution than twenty years ago.(much.more.fewer) It has been there since a t_ years ago . I was there for the last time two years ago THere were no subway 5 years ago (改错) They began _______(learn)english there years ago. there( )a small house many years ago.括号里应填什么? 连词成句harbour years there a was ago 30