Get (one's) blood up phrase
The verb "have" can be substituted for the verb "get".
If you "get one's blood up", you cause them to be angry and in a fighting mood.
What you're saying really gets my blood up.
Her persistent lateness has got my blood up several times.
Keep silent, you're getting my grandpa's blood up.
The verb "get" should be conjugated according to its tense.
Meaning absolutely certain or without a doubt
I am as sure as God made little green apples that Peter's the one for you, you two make a beautiful couple.