1.Cost an arm and a leg
(ex) It cosst on me an arm and a leg.
= Really expensive
2. A piece of cake
(ex) It is a piece of cake for me.
= Very easy to do
3.Miss the boat
(ex) It miss the boat.
=Miss your chance to do someething.
4. Once in a blue moon
(ex) It is once in a blue moon.
=Very rarely
5. The last straw
(ex) I finished the last stlaw.
=The last in a series of problems that is one too many
These idioms are that I studied at english conversation school last week,
My rank is 5th in that school,
The rank is high of middle range. I think that is mistake check.
Because that class is very hard for me.
One years ago, I studied another school.Then my rank is 2nd that is 2nd step from beginner.
Now I studied english for one year and half, my english skil is progress step by step.
I leraned man to man lesson from june to novenber last year.
And this time I started to go to school that is a few person class.
I would like to talk and comunicate with a foreigner.
I will try to study english more and more (^▽^)/