Why should we use rechargeable batteries?
A.To protect the environment
B.They are durable
C.They less pollute the environment
D.They are convenient

If you paint walls with mixed paint from “Paint Exchange Day”, you __________.
A.help recycle the motor oil
B.know how to use ‘rechargeable batteries’
C.like strange colors
D.help save the environment

She/ say / enjoy / Vietnamese food / much.
A.She said she enjoyed Vietnamese food very much.
B.She said she enjoyed Vietnamese food so much.
C.She said she had enjoyed Vietnamese food very much.
D.She said she enjoyed Vietnamese food very much.

My father/ used to/ smoke / when/ he / young.
A.My father used to smoking when he was young.
B.My father used to smoke when he is young.
C.My father used to be smoked when he was young.
D.My father used to smoke when he was young.

________(4)
A.job
B.walk
C.go
D.wait

________(6)
A.telephones
B.computers
C.mails
D.souvernirs

________(7)
A.classmate
B.people
C.friendly
D.friendship

________(9)
A.bought
B.loan
C.lend
D.sold

The problem of the use of our natural resources may be divided into _________.
A.two parts
B.three parts
C.four parts
D.five parts

Minerals exist where they are _________.
A.because of the changing physical nature of the earth
B.because they are also need to be kept by soil
C.because they are great protectors
D.All are correct