1 . I advise you _______ (do) exercise that is good for your heart, such as walking, running and swimming. (所给词的适当形式填空)

2 . I have ________ my father again and again to stop smoking but I can’t ________ him to. (advise/persuade)

3 . Doctors always advise us ________ (drink) plenty of water to stay healthy. （所给词的适当形式填空）

4 . Before an exam, parents______(advise) to take pressure off their children and give them some suggestions. (所给词的适当形式填空)