---I find the more we study, the more difficulty we have ________ out Maths problems.---Oh, I agree with you. Maths is more and more difficult.
#50150
A
worked
B
work
C
works
D
working
推荐题目
The policeman warned the driver _______too fast. It was very dangerous.
#49600
A
to drive
B
not to drive
C
driving
D
not driving
That little boy preferred ________ out to play rather than ________ TV at home.
#49650
A
going; to watch
B
to go; watch
C
going; watching
D
to go; watching
It’s easy ______ English and it’s important ______it.
#49674
A
study, use
B
say, speak
C
speak, say
D
to learn, to practice
–please don’t forget _______ the window when you leave.--OK.
#49546
A
closing
B
close
C
closed
D
to close