Sally is busy ______ her homework.
#51173
A
in
B
at
C
with
D
on
推荐题目
--It’s clever _____ you to help me work out this difficult maths problem. Thanks.--- You are welcome. Now it’s easier ______ you to understand it.
#47375
A
of; of
B
of; for
C
for; of
D
for; for
Judy failed in this exam, since she is very strict ____ herself. She is sad.
#46515
A
in
B
for
C
with
D
at