It’s difficult _____ us to remember new words.
#46384
A
of
B
to
C
for
D
on
推荐题目
I am so tired today. I swam _____ the river in the morning and I walked ____ the forest in the afternoon.
#49666
A
through, through
B
across, across
C
across, through
D
through, across
What would you like ________ supper? 
#46408
A
eating, for
B
eat, with
C
to eat, for
D
for, eating
I want to provide you _______ food and clothes.
#46489
A
to
B
for
C
against
D
With