There are some children _____ in the room.
#50736
A
singing
B
sing
C
are singing
D
to sing
推荐题目
The robot needs _______ once a month. And we will check it for you for free.
#48844
A
to check
B
checked
C
checking
D
to checking
Lily practises _______ the piano very hard.
#49238
A
play
B
plays
C
playing
D
played
It takes me half an hour ________ my homework.
#49713
A
finishing
B
finishes
C
to finish
D
finish