Bob has been s_a lot of old coins in his bedroom for three years

Bob has been s_a lot of old coins in his bedroom for three years BOB has been s__ a lot of old coins in his bedroom for three years.填什么 Has Bob been to this town before? His English has been improve a lot .His English has improve a lot. Bob　_____ the club since he here 20 years agoA.has joined B.has been in还有一道Cathy and Amy have not been back to their hometown for two years.They _______ (miss) their hometown a lot and hope to visit the place next year.为什么不用过去 怎样转换“Bob has been away from school for one hour”的同义句? What does Bob collet.He collects kites.How long has he been collecting kites.He's been kites sinc bob has中文意思 A lot __to save the old man's lifeA have been done B has been done 是has还是have?A lot of advice has/ have been offered by people?advice不可数 The place has changed a lot.The place has been quite ____ ____ before. his health _____ a lot over the past decade.为什么空格用has been improving 而不是 has been improved He knows a lot about Egypt.I heard he( )there before. A.has been B.has gone C.had been. A lot (has been done)to save the old man's lifeA lot (has been done)to save the old man's life.为什么要这样填 BOb has been collecting kites__?A since 4 years agoB since he was ten years oldC for 4 years has been The police found that the house_____and a lot of things_____.A.has broken into;has been stolenB.had been broken into;had been stolenC.had been broken into;has been stolenD.was broken into;were stolen 英语翻译Our country has been changed a lot since 1978 可以吗