Now China has joined WTo.I think English is ___ useful than beforeA muchB moreC mostD more

China has joined World Trade Organization. Now China has joined WTo.I think English is ___ useful than beforeA muchB moreC mostD more Now China has joined WTO,so I think English is _______ useful than beforeA.more B.most C.much D.many now that the country (has joined)the WTO,China meets WTO callenge.为什么括号中用现在完成时,而不是一般现在时?WTO的挑战是不是也可以写成the callenge of WTO呢? China has joined WTO,so it's more convenient for____to exchange their products.(busy) China ---- the WTO and became a new member of it last year.a.joined b.join c.will join d.hasjoinedd.has joined 求求求求 China _____ the WTO and become a member of it in 2001.A.joined B.joinC..has joined D will join How long has he _____in Greener china A become B joined C take part in D been Lily with her parents_______ the Greener China since two years ago.A.have joined B.has joinedC.has been in D.have been in为什么不用B,has joined? China ________the WTO for more than 10 years,and it has brought great changes to ita.has joined,b.has been in,c.has become a member of,d.has jioned in. Hans ( ) the army for nearly six years.A.has joined B.has been in C.has joined in D.joined He ________ the army for ten years.A.has joined B.has joined in C.joined D.has been in 英语题目（快）答案要准确23. ----______ your sister _______ in Green China for a long time? ----Yes. She joined it five years ago. A. Has; been B. Have; been C. Has; joined D. Have; joined 24. ---How long have you _______ from t his mother()the party last year.she()a party member for a yearA.joined,wasB.has joined,isC.joined,has beenD.has joined,has been He has ______(join) the army for ten years and is now an officer.A.gone intoB.joined inC.been inD.come into He has ______(join) the army for ten years and is now an officer.A.gone intoB.joined inC.been inD.come into His p___are now in China.He will stay w___us for two weeks/ He has n___been to China. She has been in China for several years.She() be a big girl now.