It’s difficult _____ us to remember new words.
#46384
A
of
B
to
C
for
D
on
推荐题目
–Where is the library? -- It’s_____ a classroom.
#49127
A
in the front of
B
in front of
C
in
D
between
They didn’t continue to climb up the mountain __________ the bad weather. 
#48022
A
because
B
because of
C
as a result
D
in fact