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【单选题】

--What’s the matter with your mother?
---She ______ a sore throat.
  

A.
has
B.
is
C.
becomes
D.
have
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参考答案:
参考解析:
.
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举一反三

【单选题】workers in the factoryover two thousand.

A.
The number of; is
B.
The number of; are
C.
A number of; is
D.
A number of; are