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
推荐题目
I prefer watching TV to ______ music every day.
#50032
A
listen to
B
listen
C
listening to
D
listening
 It’s bad for your eyes _____computer games too much.
#49191
A
plays
B
to play
C
play
D
to playing
She wanted to find a cleaner room ______.
#48435
A
to live
B
to live in
C
living
D
lives in