He has come instead of his elder sister.She (is) ill.把is改成has been行吗?

He has come instead of his elder sister.She (is) ill.把is改成has been行吗? My cousin _____shanghai sice he finshed middle school.a.has left b.has been away from c has been d has come topeter watch TV ____playing footballa.and b then c instead of d insteadinstead ＆instead of 区别 To my s________,he has come back. Has he come back?对么?不用came? If he has time,he can come tomorrow.找出错误 if he has time,he must come改错 He has tauhgt here since he come here 对since he come here 提问 He has just come back.现在完成时.He has just come back.为什么不是用came?has/have+动词过去式? l want to know how long_______A.has he been backB.has he come backC.he has been backD.he has come b为什么 What has he done instead?这句什么意思紧急!大家帮帮忙!高手支个招嘛! 英语时态.he has come here several times.为啥不对? He has h_____ that Miss White will come back he has not come back 反意疑问句是什么 He has not come back__he left.中间填什么 Jim has made many friends since he ____to China,Acame Bcomes Chas come Dwill come has he come?come不是短暂性动词吗?它可以用完成时吗? My grandfather_____.He is still very tireds.a.has just come back b.has already come back c. have yet come backd.have just come back He has always insisted on his being called Dr.Turner instead of Mr.Turner.求通顺翻译