We must protect water from being _________, because it’s the source of life.
| A．polluted | B．provided |
| C．finished | D．punished |
Our government is trying to search for the airplane has been missing for many days.
| A．what | B．that | C．who | D．why |
-- Mom, look at the kite. I made it alone.
-- Good job, Charlie. I’m _________ of you.
| A．tired | B．proud | C．sure | D．sick |
Though Lin Tao’s parents work in another city, he can ______ himself.
| A．look out of | B．take care of | C．catch up with | D．come up with |
You won’t lose weight______you keep a diet and take exercises every day.
| A．because | B．unless | C．if | D．but |
-- Excuse me, where can I exchange _________?
--There’s a bank on the second floor.
| A．books | B．food | C．money | D．stamps |