They never gave up _______ hard to achieve their dream .
#49923
A
working
B
work
C
worked
D
to work
推荐题目
Robots（机器人）are to do the same things people.
#48678
A
enough clever；as
B
clever enough；as
C
enough clever；with
D
clever enough；with
Hundreds of students came to Shaoxing to work _______ the World Choir Games in 2010,
#50625
A
at
B
with
C
for
D
on
Look at the photo of my family. The boy _________ my father and my mother is me.
#50537
A
in
B
on
C
between
D
of