Now there are already robots _________ in factories.
#50464
A
working
B
to work
C
work
D
worked
推荐题目
Would you mind _________ the piano softly ?
#50945
A
to play
B
playing
C
played
D
play
Daming likes _____ in the morning everyday.
#50184
A
run
B
runs
C
runing
D
running
I’m surprised _______ my old friends in the street.
#48831
A
see
B
seeing
C
to see
D
to look at