用所给出单词的适当形式填空

It _____(be) a duckling. Now it is a duck.

选择正确答案

-- What time is it?

-- It is ________.

A. three thirty　　 B. nine thirty　　 C. thirty nine

看图选择适当的答语

--What's this?

--_____________

1. That is a dog.
2. It is a dog.
3. That is a mouse.