1. 用方框中所给短语的适当形式填空

switch off   act as   instead of   take action   ride a bike

1. （1） It's necessary for the government to stop polluting air.
3. （2） When you leave away, please the lights.
5. （3） I start my day by taking a shower a bath.
7. （4） I usually in the park on Sundays.
9. （5） Don't a great man. You are only a student.