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.

People say that they bought this shop last year.=>It is
A.
B.
C.
D.

Worldwide governments / should have / control measures / reduce air pollution / and / protect / natural environment / future generation
A.
B.
C.
D.

Everyone / live / earth / should have / responsibility / reduce / air pollution / protect clean air / our survival
A.
B.
C.
D.