He's been studying there for （two whole hours）?对括号提问I missed the train （an hour ago） （ 同上）He skated from 7:00 to 9：00 yesterday （同上）He has been skating for four hours （否定句）He ___ ____ ____ for four hours

Robert is said ______ abroad ,but I don’t know what country he studying in .A .to have studied B .to study C .to be studying D .to have been studying选择哪个啊?been 怎么使用? 填空：（ No,he hasn't been to work today.He's been to the doctor's. he`s been studying there for two whole hours对划线部分提问.划线部分：for two whole hours Robert is said abroad, but I don’t know in which country he is.A. have been studying B. to have been studying C. have studied D. to have studied 用since、 for 填空、、英语题.he's been waiting for you _______two hoursMarie has been living here _____2010The baby has been sleeping______3:00amI've been staying in Hong Kong____two weeksJohn has been studying French_____he was twelveI slep He has been studying there for one year 就划线部分提问 划线部分 studying be,beenhe is said ____ abroad,but I don't know what country he studied in.have studied,不可以是to have been studying 33.Robert is said ______ abroad ,but I don’t know what country he studied in .A .to have studied B .to study C .to be studying D .to have been studying He's been ill and isn't fit for work yet. 为什么用 isn't fit ? 最好有解释,1.She‘s ___ ran out of money,so she can't afford the earrings.2.I'm tired now because I ____ all this afternoon.A.study B.will C.have been studying D.was studying3.The man was busy,so he had no time ____ his childrenA.to spend B.spe He's never been late for school,_______ he?A.is B.has C.isn't D.hasn't 英语翻译he hopes to get high marks in every exam .he doesn't want anyone else to excel him .so he has been studying every minute and second.he never lends his studying materials to others amd never helps others with their studies .as a result .hi what a long time he's been waiting,isn't it? what a long time he's been waiting,isn't it?对吗,为什么 英语20.Robert is said _______ abroad,but I don’t know what country he studied in.20.Robert is said _______ abroad,but I don’t know what country he studied in.a.to have studied b.to study c.to be studying d.to have been studying为什么 Tom has been studying the electronics since he left school two years ago 为啥用 has been studying给我再细讲讲 现在完成时 Tom has been studying the electronics since he left school two years ago 为什么用 has been studying给我再细讲讲 现在完成时 jim has been studying since he come home 为什么用since