单项选择题

______can be trained to work for us.

A． Only a few animals
B． Quite a few animals
C． Few animal
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单项选择题
Dogs can be used to guard a house for his host because______.
[A] they are good at running
B. they are very kind and friendly to people
C. they are brave enough to get the strangers(陌生人) and thieves away from the house
单项选择题
The story happened in______.
A． England
B． America
C． Germany
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