I went to a park yesterday. It _______ very interesting.
It's________purple chair. A．a B．an
It's________orange dog. A．a B．an
It's________cap. A．a B．an
It's________black dog. A．aB．an
为交通灯选出正确的颜色。(15分) A．green B．red C．yellow ( ) ( ) ( )
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