Don't judge a book bye its cover
what is you shouldn't prejudge the worth or value of something by its outward appearance alone
You should know which way the wind is blowing.
what is Anticipate how a certain plan or situation will likely unfold.
A piece of cake
What is very easy
The boys had butter fingers during recess.
what is to not catch something.
The elephant was as big as a house
what is the elephant was really big
Better safe than sorry
what is it's wiser to be cautious than to be hasty or rash and so do something you may later regret.
You can’t win them all.
what is It is not possible to succeed at everything you do.
break a leg
do a good job
They were two peas in a pod
what is to be very close with some one or something else
Look before you leap
what is one shouldn't act without first considering the possible consequences or dangers.
You can’t have your cake and eat it too.
what is To have two things that one desires, but they’re normally impossible to get simultaneously.
It's raining cats and dogs
what is referring to heavy rain and strong wind
he is a walking dictonary
what is he is smart
Nothing ventured nothing gained
what is you can't expect to achieve anything if you never take any risks.
You can’t fit a round peg in a square hole.
what is You can’t force someone into a role for which s/he is not suited.
could you lend me a hand
what is could you help me
You are what you eat
What is it is important to eat good food in order to be healthy and fit.
You can’t run with the hare and hunt with the hounds.
what is You can’t support both sides of a conflict or dispute.
I'm on the fence
what is making a desicion