Before our study we did not have data that could tell us __ those changes were small or large .
He said he would come to attend the lecture if he ___________ time.
--- Shall I tell John about it? --- No, you _____. I’ve told him already.
No one will be sure ____________ in a million years.
PSAs are often run _____ free, and are ______ to educate people about health, safety, or any other problem that affects public welfare.
You _________ be punished if you break the school rules.