---How much difficulty did you have________________ this problem? ---_____________. It's quite easy.
#53487
A
to solve, Nothing
B
solving; None
C
to solve, None
D
solving; Nothing
推荐题目
The dirty boy often forgets to _____ face .
#54544
A
wash his
B
washing his
C
washed , his
D
washes , his
–The lights in the classroom are still on. --Sorry. I’ll go and ____.
#59610
A
turn them off
B
turn them on
C
turn them down
D
turn them up
The boy is very brave, he_______ the tall tree.
#52084
A
dares to climb
B
dare climbing
C
dares climbing
D
dare to climb