根据所给的首字母或中文提示写出正确的单词（必修4）

1.He was under o_____________（观察） by the police.

2.We have been told to show______________（尊敬）for our elders.

3.After a long ____________ (奋斗), he gained control of the business.

4.She r____________ her weight by 5 kilograms.

5.Could you e______________ the child for an hour, while I make dinner?

6.He had o____________ the difficulties with his English before he went aboard.

7.As you _____________ (接近) the school the first building you see is the teaching building.

8.Today many people are experiencing the joy of the a______________ park for the first time.