看看下面这些英语习语或格言，试着说出它们的中文意思。
①go Dutch
_______________________________________________
②black case work
_______________________________________________
③put on airs
_______________________________________________
④I'll eat my hat.
_______________________________________________
⑤given cold shoulder
_______________________________________________
⑥dog packs
_______________________________________________
⑦as poor as a church mouse
_______________________________________________
⑧Every dog has his day.
_______________________________________________
