He has some problems _________ his English learning.
#47554
A
on
B
for
C
with
D
in
推荐题目
When the man walked _______ the library, he found a cat at the corner.
#48163
A
pass
B
past
C
passed
D
by
)Tong is afraid ,because he was terrified by an air accident.
#48421
A
fly
B
of flying
C
to flying
D
flying
