给下列单词归类(同一类的单词写在同一棵树上,只写序号)。(1) (2) (3)
听录音,圈出你所听到图片。
遇到多年不见的老朋友,你与他打招呼:
A frog(青蛙)has mouth, Two frogs have legs.
If you are sad, you are feeling
Which word isn,t units of length?