问题:
By making friends with native speakers, one can ______ a lot of their languages.
[ ]
A.set up
B.pick up
C.bring up
D.take up
By making friends with native speakers, one can ______ a lot of their languages.
B.pick up
C.bring up
D.take up
[ ]
A.set up B.pick up
C.bring up
D.take up
参考答案: