Unit 3 – Living Environment

Front

What should we do with plastic bottles?
A. Throw them away
B. Recycle them
C. Burn them
D. Eat them

Back

B. Recycle them

Front

We ___ save electricity.
A. have
B. must
C. doing
D. was

Back

B. must

Front

Choose the correct sentence:
A. You must to turn off the lights
B. We have turn off the lights
C. You should turn off the lights
D. We should to turn off the lights

Back

C. You should turn off the lights

Front

What does "litter" mean?
A. Plant trees
B. Pick up trash
C. Throw trash in public
D. Turn off the water

Back

C. Throw trash in public

Front

We ___ not waste water.
A. should
B. has to
C. mustn't
D. are

Back

A. should

Front

They ___ bring reusable bags to avoid plastic use.
A. must
B. have to
C. should
D. could

Back

B. have to

Front

Which is a bad action for the environment?
A. reuse things
B. save energy
C. throw litter in the street
D. recycle paper

Back

C. throw litter in the street

Front

A: What should we do to save energy?
B: We ___ turn off lights when not in use.

Back

should

Front

A: What must we not do?
B: We must not ___ trash in the river.

Back

throw

Front

We ___ not cut down trees unnecessarily.
A. may
B. must
C. mustn't
D. have

Back

B. must