小题1:We ________(听到) him singing in the next room when we passed.
小题2:The tired children don’t get home _________（直到）7 pm.
小题3:While the boy was (争吵) with his sister, their mother came into the room.
小题4:The dog has three legs. How ________(奇怪的) it is!
小题5:Many athletes give money to schools and charities, and do a lot of work to help people.
This is a great ______(机会) that many people do not have.