13.Rainforests _____ and burned at such a speed that they will disappear from the earth in the future

．—Listen, what is the noise?—Oh, the young man next door ______ a party

We often take part in after class activities（活动）. I like to play ____ basketball , but my brother likes to play ____ guitar .

_______ is the man in the white shirt — He is an engineer.

Be ____, Ann! Mum is sleeping.