My friend is ______her sister.
#50081
A
babysitting
B
babysits
C
babysiting
D
to babysit
推荐题目
Students should pay attention to __________ the teacher in class.
#50928
A
hear
B
listen to
C
listening to
D
hearing
Do you find this book ____________?
#50339
A
frustrate
B
frustrating
C
frustrated
D
frustration