看图完成答句，一空一词。
1. Who are in the picture?
Some __________ and a __________ are in the picture.
2. How many students are there in the picture?
There are __________. We can see __________ of them are boys and two are girls.
3. What are they doing?
They are having an __________ __________ in a __________.
4. What can we see behind the teacher?
There is a __________ and a big __________ on the __________.
