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 __________.