单项选择题


A．added to
B．added up to
C．adding to
D．adding up to
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单项选择题
The author seems to be wondering _________.
A．what makes up one's adequate working knowledge of English
B．why English can serve so many needs of various people
C．how to relate the technological problems in airport communication,.
D．when English became so widely used
单项选择题
There arc about 260 million people who can speak _________.
A．English in its regional variety
B．English in its standard variety
C．English as a second language
D．English as a working language
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