In a sport's team, each player has a clear role, and there are few occasions __________ members are confused or uncertain of their roles.
Soon Amy made several good friends, _____ she shared food, stories and small secrets.
Mr. Black told us that he ______ born on the April fools.
What is your opinion on Miss Liu’s request that we______spend half an hour reading English aloud every morning?
Because the lights happened to ______, no one noticed the thief enter our bedroom.
_____ first voyage of the ship ---- Titanic was not ______ success.