I failed in English a third time, I hadno doubt about my gift for foreign languages.

ening when it was swarm, I stayed awake___________ until half past eleven in order to have a good look at the moon bymyself

We must try our best to stop the pollution a happy life.

You were out when I went to visit you yesterday.—Oh, I________ for a friend from England at the airport.

People ____ more and more useful things to protect the earth since Earth Day was started.