﹣6的绝对值是（ ）
A：6
B：-6
C：16
D：-16
We all know that it is very important for us to learn ____ (口语的) English.
— were you yesterday?
— I was at school.
如图四支蜡烛都将熄灭，其中一支熄灭的原因与另外三支不同的是（ ）
My mother told me ______my ideas _____ my classmates.
