He is determined to become a specialist ________ computer when he grows up.
#26767
A
for
B
in
C
on
D
about
推荐题目
Which is the longest bridge ______the Changjiang River , do you know ?
#28215
A
through
B
across
C
on
D
over
To keep safe _______ an earthquake, you should remain at a spot in your room where nothing may fall on you.
#28044
A
in search of
B
in advance of
C
in terms of
D
in case of