It’s difficult _____ us to remember new words.
#46384
A
of
B
to
C
for
D
on
推荐题目
 Amy goes to school ________.
#48285
A
by a bike
B
on bike
C
on her bike
D
ride a bike
They often help kids ________ dancing.
#48128
A
on
B
with
C
to
D
at