—Is your father ___ home?—No，he’s working late ____ the office.
#47756
A
on
B
at
C
of
D
to
推荐题目
It is unhealthy _______ us to eat too much sweet food and it is wrong _______ us to buy sweet food every day.
#46374
A
of, of
B
for, of
C
of, for
D
for, for