is a process by which green plants and other organisms turn carbon dioxide and water into carbohydrates and oxygen, using light energy.
A.
B.
C.
D.

Consumers have been                   to use environmentally friendly products.
A.
B.
C.
D.

Air pollution / lead / greenhouse effect / make / temperature / Earth's surface / higher
A.
B.
C.
D.

Global warming / lead / polar ice caps melting / rise of worldwide sea levels / climate changes / other natural disasters.
A.
B.
C.
D.

My mother used to make us clean the house.
=>We used__________________________________________
A.
B.
C.
D.

We were late for school because of the heavy rain.=>Because it
A.
B.
C.
D.

It takes Minh 2 hours to do his homework every day.
=>Minh spends_____________________________________________
A.
B.
C.
D.

Do you know the man who sat next to me at Nam’s birthday party last night?=>You know
A.
B.
C.
D.

Mr.Brown's team has lost the game. He looks very sad.=>Mr. Brown whose
A.
B.
C.
D.

"How much do you think it will cost?" he said to me.
=>He asked me ____________________________________________
A.
B.
C.
D.