13.They observed him _______ the bank.

A. to enter　 B. enters　 C. entering　 D. entered

12.It is ________ that people will not agree with what the president said at the meeting.

A. certainly　 B. sure　 C. certain　 D. surely

11. The man fled aboard, trying to avoid ________.

A. catching　 B. being caught　 C. to catch　 D. to be caught

10.I am moving to the country because the air there is much fresher than _____ in the city.

A. ones　 B. one　 C. that　 D. those

9. When they got to the South Pole, they found the Norwegians had ____ them in the race to be the first ever to reach it.

A. hit　 B. fought　 C. won　 D. beaten

8.He said that he was young ______ he couldn’t carry the heavy box.

A. and　 B. that　 C. and that　 D. so that

7.When ______, one can’t be ______ careful.

A. driving, too　 B. driving, enough　　 C. driven, quite　 D. driven, very

6. Then there are always people to ________ if you feel like a chat.

A. talk to　 B. talk　 C. speak about　 D. speak

5. Sometimes it was a bit boring to work there because there wasn’t always_____ much to do.

A. such　 B. that　 D. more　 D. very

4. The murderer was brought in, with his hands ______ behind his back.

A. being tied　 B. having tied　 C. to be tied　 D. tied