---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 student is afraid _________ English with foreigners.
#51150
A
to practice to speak
B
to practice speaking
C
practicing speaking
D
of practicing to speak
—Would you like camping with me? — I’d like to. But I’m busy my homework.
#48529
A
to go; to do
B
to go; doing
C
going; to do
D
going; going
___________for his good skill, this doctor has a lot of visitors calling for help all the time.
#48486
A
Knowing
B
To know
C
Known
D
To have known