当你遇到一些需要帮助的人时,你可以主动地说:A. Can you help me?B. Can I help you?C. Can I have a look?
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?