Điền vào ô 7

A. it may cause massive fish deaths due to algae blooms

B. it may keep the banks of rivers well-covered with trees

C. it may make water unsafe for human use

D. it may spoil the beauty of beaches or waterways

A. they are not disposed properly

B. they are changed regularly

C. they may be found in the streets

D. the engines work perfectly

A. organize campaigns in which prizes will be given to the business who collects the most trash

B. find places with a lot of human recreation and of evidence of human use

C. follow the trash from these places which often ends up in waterways

D. ask local people to take part in cleaning up the beaches, maybe with the sponsor from businesses

A. alternatives to plastics or “less disposable” plastics can make the situation worse

B. using too much plastic can cause bad effects on ocean pollution

C. using plastics only causes ocean pollution

D. we don’t know how to stop water pollution

A. soil can be eroded by rain water

B. soil erosion can occur naturally everywhere

C. chemicals in the sediment from the soil erosion will pollute water

D. massive fish deaths will make the rivers unsafe for human use

A. house

B. home

C. place

D. accommodation

A. at

B. to

C. on

D. for