how are you? what have you been doing? this phrase is usually asked to a person you haven't seen for a while.
have been installed means now and had been installed means past
"TO" means to go to, to see. "IN" means to take part in, be part of
"What have you been up to?" means "what have you been doing?"
It means "What have you been doing lately?"
"Observed" is a word that means something has been noticed.
Have come to light means have been discovered.
It means that numbers have been skipped irregularly.
It has been a good time.
That means that it has been paid.
It means that that person was working the other one means they are working right now
It meanS you deactivated it that you deleted your account your accounts been deleted or temporarily un available
It means it has been heated up to kill germs and bacteria, or it means that a metal has been treated to change its properties.