4. She is very tired, ........................., she has to finish her homework.
A. moreover
B. so
C. and
D. however
5. Solar energy doesn't cause ..........................
A. polluted
B. polluting
C. pollution
D. to pollute
6. I suggest you .........................practice speaking English every day.
A. must
B. can
C. should
D. have to
7. We can save natural .........................by using solar energy.
A. products
B. resources
C. preserves
D. produces
8. How about .........................a bus? We have a lot of time.
A. take
B. to take
C. taking
D. having taken
4. She is very tired, ........................., she has to finish her homework.
A. moreover
B. so
C. and
D. however
5. Solar energy doesn't cause ..........................
A. polluted
B. polluting
C. pollution
D. to pollute
6. I suggest you .........................practice speaking English every day.
A. must
B. can
C. should
D. have to
7. We can save natural .........................by using solar energy.
A. products
B. resources
C. preserves
D. produces
8. How about .........................a bus? We have a lot of time.
A. take
B. to take
C. taking
D. having taken
