语法词汇练习 语法大全 语法详解 英语听力 
Now there are already robots _________ in factories.
#50464
A
working
B
to work
C
work
D
worked
下一题
推荐题目
I'd like you __________ my friend Tom.
#49268
A
meet
B
meets
C
meeting
D
to meet
— I feel tired and sleepy.  — Why not stop _______?
#50035
A
to work
B
having a rest
C
to have a rest
D
to go on with your work
Why do you want       see giraffes?
#50404
A
/
B
to
C
to be
D
and
－What trouble do you have when you learn English?－ __________the grammar in a right way.
#49768
A
Use
B
To use
C
Using
D
To using
He spent two hours ______ his homework last night.
#49090
A
to do
B
doing
C
did
D
do