—Do you think we should put an ad in the paper for the lost child? —Yes, ______.
Was it in 1996 _____ the American astronaut succeeded _____ landing on the moon?
The news _____ the football team won the game made us happy.
Only when class began _____ that he had left his book at home.
The student couldn’t ______ what the teacher was trying to explain.
I mean ________ aboard and nothing is going to stop me, though that means _______ my parents for a long time.