20.This medicine
A. should take
21.He is a great sports
A. enthusiast
after meals.
B. is taking
He rarely misses any sport games although he was busy.
B. player
C. has taken
D. should be taken
C. energy
D. programmer
22.As she did so, her parents became
A. the angriest
C. the more angry
B. the most angry
D. angrier and angrier