I study math by ____ lots of exercises.
#49928
A
did
B
doing
C
do
D
does
推荐题目
—My mom makes me eat an apple every day ________ the doctor away. —So does mine.
#48547
A
keep
B
to keep
C
keeping
D
kept
Although he was a child, he tired to find ways ________ people ________ life more.
#50307
A
to help ; enjoy
B
help ; enjoy
C
to help ; enjoying
D
help ; enjoying
