Mai said (that), "The burning of fossil fuels leads to air pollution."
A.
B.
C.
D.

Nam said (that), "The environment is severely affected by pollution."
A.
B.
C.
D.

An e-book is an electronic book. It can be read on a mobile device.
An e-book is.................................................................................. 
A.
B.
C.
D.

Do you know the name of the man? His laptop was broken.
Do you............................................................................................ 
A.
B.
C.
D.

This tablet is mine. Its screen has been scratched.
This tablet...................................................................................... 
A.
B.
C.
D.

The article is about smartphones. They have become excellent study tools.
The article is.................................................................................. 
A.
B.
C.
D.

A computer technician served us. He was very nice.
A computer technician................................................................... 
A.
B.
C.
D.

Quang answered the phone. He told me you were out.
Quang........................................................................            
A.
B.
C.
D.

My son, who is a promising pianist, is now interested in composing                          music.
A.
B.
C.
D.

People are now familiar with the term m-learning or                             learning, which focuses on the use of personal electronic devices.
A.
B.
C.
D.