Choose the correct options.
What would you advise a person who wants to keep fit?

• I'd advise exercising.
• I'd advise exercise.
• I'd advise them to exercise.
• I'd advise that they exercise.
• I'd advise that they will exercise.
• I'd advise their exercising.
• I'd advise their been exercising.
• I advise them to exercise a lot.