In America，primary school lasts six years. There are about twenty students in one class. They are in different groups. Different groups may have different textbooks. The whole grade graduate(毕业)at the same time，but the students learn different knowledge.
Primary school students don't have schoolbags. Their books are in the school. The students usually study reading，arithmetic(算术)，language，science，music，art and PE. The performances(成绩)show three grades. G means good. S means satisfaction. N means you need to work hard.
It is on Sunday morning. The sun is shining. We have no classes. We are playing in the park. Some girls are singing and dancing under a big tree. Some boys are climbing the hill. Tom is drawing by the lake. Mike and John are swimming in the lake. Where are Betty and Mary? They are sitting under a small tree. They are reading a picture book. We are very happy.
up
have 
to seven
to 
at 
()
()
()
（) 
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