If we use energy-saving bulbs, we (save) _____ a lot of money.
A.
B.
C.
D.

We are very worried that poisonous gases (pump) _____ into the atmosphere every day.
A.
B.
C.
D.

The advantage of living in the countryside is that the air is _____. (POLLUTE)
A.
B.
C.
D.

Although there are many _____ throughout the year, Tet is the most important festival for Vietnamese people. (CELEBRATE)
A.
B.
C.
D.

When coming to New Zealand, Albert was impressed by the beauty of the country and the _____ of its people. (FRIENDLY)
A.
B.
C.
D.

In 1978, a young pilot and his plane _____ after sighting a UFO, and they can never be found again. (APPEAR)
A.
B.
C.
D.

John (have) _____ this bike since his eleventh birthday.
A.
B.
C.
D.

Tom spent three months (learn) _____ to play the piano.
A.
B.
C.
D.

He advised me (4. take) part in this contest.
A.
B.
C.
D.

When I came, he (3.watch) TV.
A.
B.
C.
D.