Rewrite sentences 1.The air is so dirty.I sneeze so much If.................................. 2.Because the water is polluted,we can not swim in this river Because of........................ 3.Smoking makes him sick If................... 4.The students tin grade 9 are good helpers.The principal is pleased The principle......................................... 5.You smoke in public places and You'll be fined If..................... 6.Although he was sick,he did well in the exam In spite of...................... 7.The Browns last painted the living room two years ago The Browns have...................... 8.There are so many bugs in the room because there isn't a screen on the window If......................................... 9.He is busy right now.He can't help them If............................ 10.If she doesn't have enough money,she can't buy the house Unless....................... 11.If he comes here tomorrow,he may be shocked Should...................................... 12.Unless she hurries,she will miss the train If................................... Giúp mình với