Unit 194
(peter,there's something i can't decide on.
what's it ? i'll tell you today.)

Are you going to take the job.
I'll have to sleep on it.

is(are) going to =will.
He will come =he's going to come.
I will do it=I'm going to do it.
Are you going to marry me?
Are you going to give me money?
I'll buy you a house if you marry me.
(I'll buy a house for you if you marry me.)

sleep on something
I'll sleep on it.