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16. ________ (Judged/Judging) from he number of seats, a lot of people were present at the meeting.
17. It is a valuable vase ________ (dating/dated) back nearly 500 years.
18. A thing ________ (weighed/weighing) 100 kg on earth would weigh just 38 kg on Mars.
19. ________ (Following/To follow) William's example, his two sons have also joined them to protect the Great Wall.
20. Time ________ (permits/permitting), we can have a walk along the river after supper.
21. While waiting for the opportunity to get ________ (to promote/promoted), Henry did his best to perform his duty.
22. I found there was an ________ (amazing/amazed) picture on the wall.
23. From his ________ (confusing/confused) look, I can say this is a situation for him.
24. Ordinary soap, ________ (using/used) correctly, can get rid of bacteria effectively.
25. When expressing my opinion in English, I tried my best to make myself ________ (understand/understood).
26. Completely ________ (examined/having examined) by the doctor, he went back to school right away.
27. My bag ________ (filling/filled) with textbooks was left on the bus.
28. The giant panda, also ________ (knowing/known) as panda bear, is native to China.
29. Please have your luggage ________ (check/checked) an hour before your plane leaves.
30. The old man's words were ________, which made many people ________ (encouraged/encouraging).