he has been writtingthe composition the whole morningyes and he still _______a has been b does c has d is请说明一下原因

long has he been away? He has never been abroad,has he?怎么翻译 how long have the computers been used by you?改为主动has the big tree been cut down by him?改为主动all the informantion has been used for (writting the article) 对括号中内容进行提问 Has your son finished his composition?I dont know .He --------it this morning.A.wrote B.has written C.had written D.was writting he has been to beijing.什么时态? 翻译: He has been dozens of times. he has been there _twice____.画线提问 he has been in english since last He has been here ___since yesterday.___ He has never been there.英译汉 He has not been back yet He has been( )(die) fou two days. He has been abroad many times. He think he has been to shanghai ,does he. He has been to the Great Wall中为什么been He has never been abroad before.这里的been是什么 为什么he has never been to London,has he?为什么后面用has he? he has always been a good neighbour.为什么用has?