why have you been here?

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• 英语翻译It was the first day of our winter holiday.All of us were very happy.Why?Because we have one months to do things we love to do.We are free.Although we have some homework.But we can finish them in several days.And the rest time we can make good use of.My god!We have been very tired after hard studying.In winter holidays,I want to have full sleep and eat good food in order to replenish myself.Last but not the least,I will have a good rest.
• would you like some pears?--No,thanks.I think there ___ enough for usA.is B.are C,has been D.had beenc是不是应该改为have been因为pears 是复数,B也错了,因为要用完成时态请问,你觉得呢?
• pls never say we would have no chance to restore our relationship once again cuz never is a long word and it is a long road that has no turn.and people always say when God closes the door he will open a window for you.So pls give it a shot because we appreciated each other's value and bright points back then.what if you say so to the one you've been head over heels with on Feb 14?good translation!however,i am asking for advice on such an issue "what i
• Why didn"t you give the wallet to the man at once?He ____ before l realized it was his.A.had been disappearedB.has disappearedC.had disappearedD.has been disappeared我选D 这两个有什么区别?
• 1.-Why are you in a hurry?-( )my mother is ill,I have to take her to hospital.A.For B.Since C.As D.Because2.-Hello,you look tired today.-Yes ,Ispent too late yesterdayevening.I( )my homework and forgot the time .A.was doing B.has done C.have done希望能给讲解一下.
• 高中英语一题单选Linda,can you manage it without help？It seems no easy.-_____I have done such a task before.A.With pleasure.B.Take care.C.Don't worry.D.Why not？应该选哪个呢？为什么呢＠_＠
• 一片英语科技短文的选择here have been many great inventions, things that changed the way we live in. The first great invention was one that is still very important today一the wheel. This made it easier to carry heavy things and to travel long distances. For hundreds of years after that there were few inventions that had as much effect as the wheel. Then in the early 1800's the world started to change. There was little unknown land left in the world. People did not
• 两道2012辽宁高考英语单选题,求答疑33.Jack is a great talker.It's high time that he_______ something instead of just talking..It's high time that 啥意思?A.will do B.has done C do Ddid（答案D,我选A）35.Mum,I was wondering if you could lend me a few dollars until I __________ on Friday.A.get paid B.got paid C have paid D had been paid（答案是A,我选B）get ,have 搭配词组有啥区别?最好每个选项都能解释下~
• How ___ is this drum?it is 45 yuan.how____legs are there in a bee?six.how____milk is t here in the fridge?There isn't any.how____is it from your home to your scjool?aboot 4 km.how____do you have olympic math? twice a week?_____do you go to school?on foot.
• ---- Let's go and have a good drink tonight,---- Let's go and have a good drink tonight.---- ____ Have you got the first prize in the competition?A What for?B Thanks a lotC Yes,I'd love toD Why not?
• f(A,B)=sinˇ2A+cosˇ2B-根号3*sin2A-cos2B+2,当A+B=∏/2时,将f(A,B)按向量P平移后得f(A)=2cos2A,求p
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