Walk on the (小路),not on the grass.
Mr. Li often (鼓励) us to speak English in class.
Our teacher said that we will be (分开) into six groups.
Lots of trees can help to (阻止)the water and the earth from going away.
How (吵闹的)the students are!
根据中文提示补充单词,使句子完整、通顺.
Reading books can give us (知识)and make us happy.