A.easy-going,B.a black sheep,C.walls have ears,D.keep their

A.easy-going,B.a black sheep,C.walls have ears,D.keep their eyes open,E.an early bird,F.
works like a beaver(海狸)
1.Don’t say anything bad about him.You know,_____ .
2.Thieves(贼) always ________ for the police.
3.Our teacher is very _____ .She is our friend.
4.Helen is ______ .She gets up early everyday.
5.You don’t know why Tom _____ ,maybe he wants to make more money.