1)If we __________ littering, the environment will be polluted.
A. turn on
B. turn off
C. go to
D. go on
2)She is tired __________ she stayed up late watching TV.
A. and
B. as
C. however
D. but
3)How about __________ a poster on energy saving and hanging it around our school?
A. make
B. to make
C. making
D. made
4)My aunt Judy, ____________ works in the national bank, earns a lot of money.
A. which
B. who
C. that
D. where
5)A tropical storm which reaches 120 km per hour is called ____________ in Asia.
A. typhoon
B. hurricane
C. cyclone
D. tornado