Ⅰ、单项选择。（20分）
1. ---What’s this in English?
---It’s ______ English book.
A.a B./ C.the D.an
2. ---What’s _______ favorite subject?
--My favorite subject is math.
A.his B.your C.you D.me
3. We _________ a soccer ball.
A.aren’t B.don’t have C.don’t D.doesn’t have
