—Do you hear the noise outside?—Yes. There must be some kids __________ outside.
#51016
A
have fun
B
has fun
C
to have fun
D
having fun
推荐题目
Why not_____an English club to practice_____English? 
#51265
A
to join; to speak
B
join; speaking
C
join; to speak
D
to join; speaking
— It’s a fine day today. How about __________?  — Sounds great!
#51200
A
go hiking
B
go to hike
C
going hiking
D
to go to hike
The life we were used to ________ greatly since 2002
#50668
A
change
B
changing
C
have changed
D
has changed