_____it have been the failure to pick up directions from the ground control that caused the air crash?A would B could 可是A不是也可以表示推测么?

I have forgotten _____it填什么介词 The 11th National Games have been s_____ held in Shandong in October,2009. _____it have been the failure to pick up directions from the ground control that caused the air crash?A would B could 可是A不是也可以表示推测么? have been have been have been have been 这英文的中文意思是什么?Swallow：you have been eagger for April 15th has become the clouds . Trayn and Jeff Have ever been friends.But when they go up to the 6th grade,everything changes.翻 We will have been married a year on June 25th.的been是什么将来完成时是will have done的结构 been是干嘛的举个列子吧 Since the 14th and 15th centuries,tjhe Diaoyu Islands ________ in Chinese maps.A.have been included B.had been included C.were included D.would be included为什么选择A不是B呢 英语关于现在完成时、过去完成时、过去完成进行时的一道题目you have finished your work ,haven't you?No,I _____it the whole morning1 have been doing 2 have done3 had done4 did选哪个,理由应该是：finished your work yet - have you graduated from Fudan University?- yes .it is tow years since I _____it.A.have left B.had left C.left D.leave 答案是选A,我知道肯定是用完成时,问题是leave是非延续性啊.为什么不把left改成been away 1.The horse is so old and can't run _____it didA so faster as B so faster than C as fast as D as faster as2.They have never been there,____?A.were they?B has he C haven't they D have they3.I don't know if she ___this sunday.If she ___ I'll go swimmin 英语翻译DEAR XXX:How have you been?I am usually busy.What do you mean by chat with you?Do you meanmessenger?We always do have a holiday in here - Carnival - from Feb,12th to Feb,16th.I will be on vacation from Feb,11th,returning on Feb,18th.How Don't worry about this matter,_____it easyA,take B.make C.get D.have 英语句子语法问题all the main languages have been studiesall the main languages have been studies prescriptively,especially in 18th century approach to the writing of grammars anddictionaries.Especially 的用法 并且他后面的那个to的 英语翻译No new international effort has been made to overcome the worst of poverty and underdevelopment.Economic marginalization has been allowed to continue and the 20th century have deepened.Continued malnutrition and poor health care have chil