—You have no idea how to solve this math problem.—You should try to think about which principle can _______ it.
—I have some big news for you. You’ve been accepted as a member of our club. —_______ That’s great!
—Would you like to join me for a quick lunch before class? —______, but I promised Nancy to go out with her.
--- I am taking my driving test tomorrow. --- _______!
I’ll try my best to _____ the lost time.
It was ten o’clock _______ we got to the top of the hill.