-- _____is that used for?---_____ the floor.
Professor Wang is a friend of mine who works in a ________ school.
Two businessmen have donated $70,000 to _____our school’s campaign“Help the Needy”, which was started by our former headmaster three years ago.
---He is______ a brave man. ---we can’t admire his courage ______.
--- What on earth is that noise? --- Oh, the next flat ___________.
Many companies are eager to sign a contract with Zhang Lianying, who has the potential to______ a super star.