Body language is a powerful communication system, ______ it can signal verydifferent things.
Oneofthemainreasonsisthatmakingfurniture______vastquantitiesoftrees.
教学评价是英语课程的重要组成部分。
I'm eleven years old. My little sister is nine. So __?
老师说： Draw a circle. 学生画一个 circle,这就属于课程标准里面谈到的用语言来做事情。
