1．It is the third time that such a competition            (hold) in our school.

2．          (accuse) of giving away state secrets, he felt really upset.

3．When        (compare) different cultures, we often pay attention only to the differences rather than the similarities.

4．He was the only one of the student representatives who        (seat) in the first row together with experts from home and abroad.

5．She wished that her father would be as easy         (please) as her mother.

6．        (expose) to the sun for too long a time will do great harm to our skin.

7．          (judge) from his appearance, he must be a foreigner.

8．With a new 3D printer installed in the classroom, the children had a great time         (use) it to print their computer works.

9．I wish I         (attend) my sister's wedding last Tuesday, but I was on a business trip in New York then.

10．On his desk            (lay) the letters for the boss, which he didn't read until three days later.

11．Group activities will be organized after class      (help) children develop team spirit to help

12．The building is reported _____ (burn) down to the ground in the first last week.

13．Sometimes, the victory and honor          (belong) to individuals may result from very effective teamwork.

14．You cannot accept an opinion          (offer) to you unless it is based on facts.

15．           (consult) Professor Russell several times, I finally work out the difficult maths problems.

16．On hearing the news, the girl        (leave) the luggage lying on the floor, rushed out without hesitation and disappeared in the dark.

    On hearing the news, the girl rushed out without hesitation,         (leave) the luggage lying on the floor, and disappeared in the dark.

17．It is required by law that a driving test         (take) before he gets a license.

18．With a lot of difficult problems          (settle), the newly-elected president is having a hard time.

19．To learn English well, we should find opportunities to hear English      (speak) as much as we can.

20．I was the first Western TV reporter        (permit) to film a special unit caring for pandas rescued from starvation in the wild.

答案

1. has been held                9. were laid                    16. left/leaving

2. Accused                  10. had attended           17. (should) be taken

3. comparing                11. to help                18. to settle

4. was seated                   12. to have been burnt／burned      19. spoken

5. to please                    13. belonging                   20. permitted

6. Being exposed                14. offered

7. Judging                  15. Having consulted

8. using