It is very kind _____ you to help me with my lessons. It is difficult _____me to learn them well.
#51240
A
of , of
B
for , of
C
of , for
D
for , for
推荐题目
Alice looked _____ the window, and saw a rabbit running _____the filed.
#45893
A
through, after
B
through, across
C
across, through
D
thought, across