在B栏里找出A栏的正确答句，把字母编号写在题前的括号里。
What’s thisEnglish ? A. in B. atC. on
Where’s your grandfather ? He’s home . A. at B. inC. on
My sister isClass One . A. at B. inC. on
Let’s count24 . A. Class ; Grade B. one ; threeC. from ; to
My mother is a doctor . How your mother ? A. is B. about C. are
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