题目内容
What ________ the population of the USA?
[ ]
A.
is
B.
are
C.
have
D.
has
答案:A
解析:
解析:
|
the population作主语用单数。 |
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题目内容
What ________ the population of the USA?
is
are
have
has
|
the population作主语用单数。 |