根据句意及词首字母或汉语提示，补全单词。

根据句意及词首字母或汉语提示，补全单词。
小题1:Don’t talk l______ in the classroom. It’s impolite(不礼貌的).
小题2:The movie is so boring. I can’t s_______ it.
小题3:The clothes shop is on sale. This shirt is very c_______.
小题4:Yesterday, Kate studied for the English t________.
小题5:Please __________ (记住)to turn off the lights.