4.My friend, David, was not used __________by air, so he felt unwell.
Mom believes that those words put to paper two centuries ago really _____ something.
We know _____America is great not because it is perfect but because it can always be made better and _____ the unfinished work of perfecting the union falls to each of its citizens.
If Doric continues doing things like that, he ______ face the music one day!
I know you have eaten all sorts of junk food your mother and I probably _____ you have.
Obama’s years in Indonesia were unforgettable for some of his former schoolmates _____ his teachers.