问题
选择题
English is one of the ______ languages at international meetings.
A．work
B．working
C．speaking
D．spoken
答案
B.
Working languages工作语言；实用的，有用的语言 a working knowledge of computers
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English is one of the ______ languages at international meetings.
A．work
B．working
C．speaking
D．spoken
B.
Working languages工作语言；实用的，有用的语言 a working knowledge of computers