I study math by ____ lots of exercises.
#49928
A
did
B
doing
C
do
D
does
推荐题目
You’d better ________ too much meat. You are too fat.
#50936
A
eat
B
not eat
C
not to eat
D
don’t eat
That’s a good place ________ football.
#51275
A
playing
B
to play
C
plays
D
played