你会判断吗？(同类的词写“S”，不同类的词写“D”。)(30分)
Where ________ your mother work? A. doesB. doC. did
A vet is ________ animal doctor. A. aB. anC. /
What ________ your dad? A. areB. amC. is
Where are you ________? A. fromB. comeC. come from
She is good ________ English. A. inB. atC. on
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