. I think immediate action should be ____to prevent the facories sending out waster
The Dragon Boat Festival _____ the beginning of the hottest season of the year.
How ______ you say that you really understand the whole story if you have covered only part of the article?
–Smoking is bad for your health. --Yes, I know. But I can’t _____.
Many new buildings are being ________ in this area now.
You shouldn’t accept a gift from a person _____ you don’t know him.