giúp mình câu b với c với

12. After the accident, many people were exposed ………….radiation.

A. at B. from C. to D. with

13. Emissions of pollutants into the air can …………. changes to the climate.

A. get on B. end up C. go into D. result in

14. John hasn’t got satellite TV, so he can’t watch the game.

A. John had satellite TV, he could watch the game

B. If John had satellite TV, he could watch the game

C. If John had satellite TV, he could not watch the game

D. If John didn’t have satellite TV, he could watch the game

15. If the local people drink the contaminated water, they(have) ………….health problems.

A. will have B. have C. are having D. had

16. Grace didn’t love the nature, ………….she wasn’t happy when her group went camping in a jungle.

A. so B. and C. but D. because

17. Air ………….together with littering, is causing many problems in our cities today.

A. polluted B. pollute C. polluting D. pollution

18. …………. are chemicals that are used to kill unwated plants, such as weeds.

A. Fertilizers B. Herbicides C. Pollutants D. Pesticides

REWRITE:

1. Go ahead and you will reach the bus station.

à If ………………………………………………………..

2. Do more exercise, or you will be punished by the teacher.

à If ……………………………………………………

3. Because Simon doesn’t live near his mother, he can’t visit her often

à If ……………………………………………………….

một mảnh đất hcn có chu vi bằng 100m. Nếu tăng chiều dài thêm 5m và giảm chiều rộng đi 4m thì diện tích cửa mảnh vườn giảm đi 40m^2. Tính chiều dài và chiều rộng của mảnh đất lúc ban đầu
giải bài toán bằng cách lập pt

trong các giá trị y=-1,y=0, y=1 giá trị nào là nghiệm của phương trình: \((y+1)^2\)=3y+4