Choose the best answer to complete

19. At the upcoming
A. powerful
20. She runs
A. the slowest
21. He did the test
conference, the computer
B. will buy
B. powerfully
in my class.
B. the most slow
I did.
A. as bad as
22. There is too much traffic,
A. however
B. so
23. If you want to save money, you should
A. increase
B. reduce
Mark the letter A, B, C or D on
B. badder than
1018Wing day.
technician will speak about the
bought
C. powered
C. the slowly
C. more badly than
the air is polluted.
D. would buy
of networking.
D. power
D. the most slowly
D. worse than
D. although
C. moreover
the amount of water your family uses.
C. adapt
D. repair