Can you guess the meaning of the underlined expressions?

题目

Can you guess the meaning of the underlined expressions?
1.I'm sorry to be sush (a wet blanket),but I'm afraid I have to go home now.
2.Paul was such a slow worker at first that we almost fired him,but he proved to be (a late bloomer)
3.DO you know why Jack has been promoted?He is the bigggest(apple polisher)in the company!
4.He seems never to know what tiredness is,and he's really (an eager beaver)
5,I used to be a typical (mall rat) hanghanging around watching the crowds.But now I join the football club,and I have no time

答案

1.扫兴的人
2.智力发展晚的人
3.马屁精
4.做事卖力气的人
5.在mall里钻来钻去无所事事的人