we will save thousands of trees if we............. paper A. wouldn't waste B. don't waste C. wasted D. didn't waste Noise pollution can lead to .............. loss A. looking B. hearing C. listening D. reading If I .............. a millionaire now, I .............. travel around the world. But in fact, I am very poor and have no money A. were/would B. am/will C. were/will D. am/would We would wear ............ when you go to concerts or other loud event to reduce the effect of noise pollution A. earphones B. earrings C. earplugs D. ear drops What is the main ............. of visual pollution ? - Because there are too many advertising billboards A. effect B. affect C. result D. cause Ships spill oil in oceans and rives. This results........... the death of many aquatic animals and plants A. to B. in C. from D. at The acid rain has caused ............... to the trees in this area A. damage B. advantage C. pollutant D. enviroment Households ............ waste into the river so it is polluted A. damage B. lead C. lose D. dump We have to pay a huge amount of money - there million dong for electricity a month................ we turn on the heater all the time A. because of B. due to C. although D. since Have you come................ solutions to this problem A. up to B. up with C. to with D. on to If we recycle more, we............ the Earth A. help B. would help C. will help D. helping If we ................ water carefully, more people will have fresh water A. will use B. using C. use D. would use