Bill’s room is very big. There are two bottles of orange and a glass of milk on the table. He’s drinking some tea. Near the table there’s a bed. His sister is reading a book. On the wall there’s a picture. In the picture we can see some boys are playing games. Some girls are singing under the tree. They’re very happy.

根据短文内容回答下列问题。

1．How many glasses of milk are there on the table?

2．What’s his sister doing?

3．What’s Bill doing?

4．What’s on the wall?