Where does Simon comefrom—- Tokyo, the capital of ________.

Years ago we didn’t know this, but recent science ______ that people who don’t sleep well soon get ill

The teacher asks the students to talk in English out of class just as they______in class.

chool is undoubtedly a time of growth, both physically and emotionally, ________ academically and socially.

There ________ a wonderful concert in Beijing Theater tomorrow.