It is very kind ____ you to help me with my lessons. It is hard ____ me to learn them well.
#46694
A
of; for
B
of; of
C
for; of
D
for; for
推荐题目
The young man wears glasses because he spends too much time _____ the computer.
#48396
A
to work, in
B
working, on
C
to work, on
D
working, in
