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3.老師走進教室時，學生們假裝正在讀書。

When the teacher went into the classroom,the pupils __________.

4.Everyone is supposed to __________(積極參力卩) protecting wild animals.

10. Wearing dark glasses can p__________ your eyes from the sun.

9.The government is trying to improve the housing__________(條件) of all the people.

8.He notes down everything that's __________(值得) remembering.

7. __________(同時) the window opens and a masked man enters the room.

6.The police haven't found the exact s__________ where the girl was murdered.

5.Having lost their land,the villagers had to s__________ for survival.

4.The__________(理想的) design would never be put into practice.

3.Many species of animals and plants have been made__________(絕跡) .