The _____(thin)the air is,the sicker people may feel.

The girl became much _____ after doing exercises.(thin) the thin blue The _____(thin)the air is,the sicker people may feel. Who is the __man standing over there?A,thin,tall B,tall,thin C,thin,short帮忙选下 He is?than his brother.A thinner B thin C the thinner D more thin The explanation is pretty thin. ( )8.Do you know_______ of them two?A.thin B.thinner C.the thinner D.the thin John looks too _____.He can't ______ the box.A.strong;pick up B.young;lift up C.thin;dress up 英语改句 保持原句意思不变The ice on the river is too thin for us to skate on.The ice on the river is not _____ _____.Shops reduce the prices at weekends to attract more custormers.Shops reduce the prices at weekends _____ _____ they can a The old man pointed to a thin rope between a big strong tree and a thin young one. Fill in the blanks with the given words in their proper forms.He lives on the ____ floor.(twelve)Lucy is the _____ girl in our class.(thin)There is a reading-room on the _____ floor.(twenty)_____ there a lot of traffic in the street?(be) The ( ) is thin,the( ) is thick. the wrong side of the thin edge the monkey is( ) than the bear.A.thinner B.fatter C.thin You can't be _____ when you camp _____ at high altitude,when the air is thin.A.enough careful,atB.too careful,atC.careful enough,onD.too careful,on 单项填空（4题）1.—Hello! Is _____ Mary?—No, _____ is Sally.A.she; it；B.that; this；C.this; that；D.you; it2.Bill's sister has _____ MP4.A.an；B.the；C.不填；D.a3.What's it in the picture? I _____ it's a model plane.A.know；B.thin 28.---- The light is on.Who is in the room?---- _____ must be my sister.A.There B.It C.She D.That34.____the ground is ,___the air becomes.A.The high,the thin B.Higher,thinnerC.The higher,the thinner D.Higher,the thinner43.---- We will bulid a subway look!the people ______(awim) in the river.tom,i'm watching a football match.what about you?a.i am ,too b.i am ,either c.i do ,too d.i don't ,eitherhe _____ (lie) on the beath and _____(enjoy) the sun this summer.the ice is too thin .you can't skate o