T---- by air is much faster ,but it 's more expensive 应填什么

T---- by air is much faster ,but it 's more expensive T---- by air is much faster ,but it 's more expensive 应填什么 Traveling air is much faster than traveling sea.a.to by b.by on c.by by d.from to 一篇英语阅读（初中）+20分The job of an air hostess（空姐）is not as easy as it looks.Most people that travel by air read,or sleep,or look out of the window.They don’t trouble the air hostess much.But some people ask questions and com it takes hours TO t ravel BY train than by air在hours 前有一空 A much more B many more 选什么?why 这里不是比较级吗/ The rate of change of the altitude of a hot-air balloon is given by r(t)=t*t*t -4t*t+6 for 0 Travelling by air is _____ than by train.(expensive) travelling by train is ----cheaperand------enjoyable than that by air if shipment is effected after the last shipment date,the shipment must be by air in cif delivery t Traveling______ air is much faster than traveling ___ sea.a.to by to b.to about yo c.for to tod.for about to He is going to Nanning by air.求翻译 THE earth is(surrouned)by air.这样填对吗 Traveling by air is quicker. Traveling by air is more quickly.这两句话那句话正确 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? 英语翻译People and the sources of air pollution are found in the same places.This means that cities with large populations have the biggest problem of dirty air.Air pollution is caused by many different things.A major source of air pollution is t it cost him too much to travel by air.这里是不是要用to travel? Mrs Green is going to England by air next mouth(对 by air next mouth进行提问） 求英语首字母填空 两小题 The round box is well d____.l'd like to take it as a s____.T_____ by air is much faster,but it's more expensive.