—What time do you usually get up?—I usually get up ____ six o’clock.A. on B. in C. at
Do you know _____?
There is _____ knocking at the door. Go and see who it is.
—What was your hometown like five years ago? —It _____ very old and dirty.
I won’t take part in the party _____ Joe invites me..
—Will you go to Jane’s birthday party this evening, Rick? —If Michael won’t, _____.