——I’m sorry I______ my exercise book at home.
——Don’t forget ______it to school tomorrow, please.
| A．forgot, to take | B．left, to bring | C．forgot, to bring | D．left, to take |
–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 |