选择方框内的单词完成下列句子，使句子通顺、正确。每词限用一次。

A. aloud   B. between   C. sweep   D. twice  E. polite   F. friendly

It’s not ________ to make noise in the movie theater.
The man _______ Mary and Gina is my new English teacher.
Could you please _______ the floor? It’s so dirty.
Please read the message ______, so that we can hear you.
It’s a good habit to brush our teeth _______a day.
We like our math teacher, because he is very _______to us.