–Why do you like climbing mountains?
--Because they are there and climbing is _____thing I have ever done.
A．the more exciting B．the most exciting
C．the more excited D．the most excited
It is said the cost of medical care today is ten times as ____ as it was ten years ago.
A．expensive B．big C．high D．tall
– Look at these factories. I hate them. They____ many rivers here.
--Yes. Something ______ to stop the pollution.
A．polluted, must do B．had polluted , must be doing
C．have polluted , must be done D．were polluting, must be done
--David will never ____ though he fails again and again.
--_______. So I believe both of you will succeed one day.
A．give up, Neither will you B．give off, Neither you will
C．take up, So will you D．take off, So you will
–Look at that red bike, it _____ belong to you. I have seen you ride it.
--But it ____ be mine. Mine is broken. I am having it repaired.
A．may, can’t B．must, mustn’t C．may, mustn’t D．must, can’t
–Why didn’t you _____ the guests some tea at first?
-- But they said they didn’t like it.
A．provide B．share C．serve D．take
