---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
His brother is only six years old. He has difficulty the story books.
#51062
A
read
B
reads
C
to reads
D
reading
Don’t make him __________ all the cleaning alone. After all, he is so young.
#49396
A
to do
B
do
C
not to do
D
doing
Mike was late for class, so the teacher made him at the back of the classroom.
#48979
A
standing
B
stand
C
to stand
D
stood
Do you enjoy _______ football? I hear there will be a football match tomorrow.
#50968
A
playing
B
play
C
played
D
to play