Travelling by air may be ____,but not so ____. 答案是quicker cheap 求解释为什么不用cheaper？

Travelling by air is _____ than by train.(expensive) travelling by train is ----cheaperand------enjoyable than that by air Mario doesn't like travelling by air （改为同义句）Mario___ travelling by ___ . Let's travel by air,shall we?(改为同义句）（ ）（ ）travelling by air travelling by train is more comfortable than by air 这句话谁是主语?谓语宾语? Travelling by air..Travelling by air is ____more expensive than ever though the air tichket are on discount(打折)A.very B.a lot of C.many D.far答案还是一定要权威哦! which do you like better,travelling by air or tavelling by train?快我要的是英语答案 连词成句 1.had,the,an,little,yesterday,boy,accident.2.travelling,cheaper,by air,is,by train,than Travelling by air is ______ more expensive than by train even though the air tickets are on discounA.very B.a lot of C.many D.far 1.I hate travelling by air ( ) you u1.I hate travelling by air ( ) you usually have to wait for hours before the plane takes off.A.because B.though C.until D.unless I am used to travelling by air and only on one oI am used to travelling by air and only on one occasion have i ever felt frightened.求翻译,必采纳 ______ like ______ by air.A.Greens,travelling B.The Green,traveling C.The Greens,travel D.T Travelling by air may be _______ A.quicker B.more quicklyWhich is the right answer? And why? Travelling by air may be ____,but not so ____. 答案是quicker cheap 求解释为什么不用cheaper？ 汉译英：他说他讨厌乘飞机旅行.He said that he hates travelling by air.对否? I am used to travelling by air.语法 to 后面都是加原型,为什么这个是加ing形式? travelling by airNowadays,travelling by air is much cheaper and more convenient than before,but it also brings some environmental problems.Discuss both sides and give own opinion.请问一下这道题的思路是什么? Frenchmen prefer travelling by train to travelling by plane.翻译