20. It is only in the last sixty years that　　　　 any evidence that Loch Ness Monster might exist.

A．there has been　 　　 B．there was　　 　　　 C．it has been　　　 　　　　 D．it had

19.________all his courage, he invites Celine to get off the train with him．

A．To gather　 　 　　　B．Gathered　 　　　 　C．Gathering 　　　 　　　　D．Being gathered

18. _______of the household rubbish　_______recycled or reused since the new technology was applied.

A．Three-fourth; has　　　　　　　　　 　　　　　　　　　　 B．Three-fourth; have been

C．Three-fourths; has been　　　 　　　　　　　　　　　 D．Three-fourths; have

17. Young people go to college with the expectation that ____________ educated people get a higher pay.

A．good　　　　　　 B．better　　　　　　 C．best　　　　　　　　　 D．the best

16.Write down the key words that you __________ your students to find in the passage.

A. make　　　 　　　　　　　 B. hope　　　　　　　　 C. suggest　　 　　　　　　　　 　D. expect

15.　 I think you should complain __________,of course, you are happy with the way things are.

A．if　　　　　　　　 B．unless　　　　　　　　 C．as　　　　　　　　 D．because

14.　_________in charge of the shopping center has upset him for quite some time.

A. Left　　　 　　　　　　 B. Being left　　　 　　　　　 C. Having left　　　 　　　 　D. To leave

13. As Susan stared at ______ piles of plastic in her recycling bin, ______ strong sense of responsibility made her stick to her recycling work．

A．不填；不填　　　 B．不填; a　　 　　　C．the ; a　　　　　　 D．the; the