---What are you doing? ---- I am _____ a letter.
A.sending B. writing C.Both A and B
你想知道树上有多少只小鸟，你可以说：
A. How many birds ?
B. They’re birds.
What ____ is it? It’s a triangle.
A. color B. shape C. shapes
Is this the school? Yes, _______.
A. it is B. It is C. it isn’t
What colour is it? It’s _______.
A. It’s grey. B. It’s a grey. C. It’s the grey.
My ears ____long. My tail _____short. I’m a rabbit.
A. are…am B. is…are C. are…is