单项选择题

-- ______ the United States developed
--So ______.

A．Is, is it
B．Are, are they
C．Is, it is
D．Are they, are
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单项选择题
More than one student ______ read the book and more than two hundred people ______ attended the meeting.
A．have, has
B．has, have
C．is, are
D．are, is
单项选择题
As we know, ______ speak ______.
A．German, German
B．German, Germen
C．Germen, Germany
D．Germans, German
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