1.a drop in the bucket 微不足道

2.Absence makes the heart grow fonder小别胜新婚

3.All that glitters is not gold.金玉其外败絮其中

4.At the eleventh hour.来得早不***得巧

5.back to square one 回到原点

6.beat the rap 全身而退

7.bite(one's)tongue 保持沉默

8.black sheep of the family 败家子

9.bottom line最后底线

10.break a leg 祝好运。