Listen! Is Professor Johnson giving a report in the hall—No, it be him. He has gone to Japan.

What are they__________ the police in the meeting room

e places, red indicates sadness, as in South Africa, _______ it is the color people wear when they mourn.

The kids spends two hours_____Chinese every day.

increasing number of middle school students go abroad for further study at their own ________, trying hard to realize their dreams.