It’s difficult _____ us to remember new words.
#46384
A
of
B
to
C
for
D
on
推荐题目
---We think it is wrong ______ him ______her copy the homework.  
#48512
A
of; to help
B
for; to help
C
of; helping
D
for; helping
 _____his free time, he often watches ball games ____TV.
#48286
A
On, in
B
On, on
C
In, in
D
In, on