Here are the correct forms of the verbs for the given sentences:

11. Martin enjoys **going** to the church at weekends.
12. My daughter loves **reading** comics before going to bed.
13. Does exercise and getting enough sleep **help** people keep fit?
14. Karen enjoys **shopping** for clothes and shoes.
15. Simon likes **going** fishing with his dad at weekends.
16. Rosie hates **doing** housework.
17. My mother says when she **retires**, she **will go** back to her village to do the gardening.
18. She **takes** a lot of photos when she **goes** on holidays.
19. My father **likes** collecting stamps so much.
20. My aunt **plays** the guitar once a week.