PS:请写出为什么1.The old scientist has made ___ in growing rice,which will ___ more people in the world.A.a breakthrough;feed onB.a breakthrough;feedC.a breakthrough;feed toD.breakthrough;feed with2.Is your house ___ now?-Yes,it ___ a half mont

PS:请写出为什么1.The old scientist has made ___ in growing rice,which will ___ more people in the world.A.a breakthrough;feed onB.a breakthrough;feedC.a breakthrough;feed toD.breakthrough;feed with2.Is your house ___ now?-Yes,it ___ a half mont The _ boy is Tom's brother.A 8-year old B 8 years old C 8year old D 8 years' old 请说明理由不知为什么 PS:请写出为什么1.The feeling is shared by many teachers _____ students can become independent learners.A.who B.that C.why D.how2.Much to the couple's comfort,their income is now double _____ it was five years ago.A.that B.than C.which D.what PS:请写出为什么1.Which do you enjoy ____ your weekend,walking in the wood or fishing by the lake?A.spending B.to spend C.spent D.of spending 急!things of the old times.time为什么加s the old man said （s 相同质量的下列单质分别与足量的氧气反应,消耗氧气最多的是（ ） PS:请写出为什么A.Mg B.Al C.S D.C What makes everyone old?请写出答案, PS:请写出为什么1.____ the moring of April 15th,they finished reading the book.A.From B.At C.In D.On2.They did some cooking last night.（改为否定句）3.When did she first go to movies?（改为同义句）_____ ______ was she when the firs PS:请写出为什么1.They set off early the next morning in order to avoid ___ in the rush hours.A.catching B.to catch C.being caught2.____,his idea was finally adopted by the manager.A.Strange as might it soundB.As it might sound strangeC.Strange PS:请写出为什么1.The poor man stood there,with his hands ____,____ his eyes upon the dark cave.A.crossed;fixing B.crossing;fixing C.crossed;fixed D.crossing;fixed2.The foreign friends you referred to ____ looking forward to ____ around our scho PS:请写出为什么1.The storm that suddenly hit this city made ____ impossible for them to hold the games on time.A.it B.him C.this D.that2.He didn't make ____ clear when and where the meeting would be held.A.this B.that C.it D.these3._____ what y Hearing the high compliment on his newly published book,___ smile appeared on the scolar's face.A.the old same B.the same old C.old the same D.same the old为什么选的是B? PS:请写出为什么1.Surprisingly,Susan ___ all the jokes she had heard at school by the time she got home.A.has forgotten B.had forgotten C.forgot2.To my great surprise,Tom looked quite different ____ I had expected.A.in which B.in that C.from wha PS:请写出为什么1.Please make sure that the light ___ off before you leave the room.A.will turn B.will be turned C.is turned D.turns2.I will try my best to finish it ____ it may mean to me.A.however B.whenever C.wichever D.whatever 关于双重所有格的用法...很不理解啊.Look at that old man.He is——.A,a friend of my B,a friend of mineC,me's friend D,my friend 为什么非得选B用双重所有格...为什么不能直接说He is my friend呢?..PS：请不要再把 根据答语写出问句 1.She's thirteen years old.2.His birthday is November-eleventh.3.She is fin根据答语写出问句 She's thirteen years old.His birthday is November-eleventh.She is fineyour football is under the bed .it's $20 A lot (has been done)to save the old man's lifeA lot (has been done)to save the old man's life.为什么要这样填