Activities = verb + noun (V~ing/gerund)
(1) reading
(2) driving
(3) eating
(4) swimming
(5) dancing
(6) singing
(7) meeting
(8) painting/drawing
(9) calling by phone
(10) cooking
(11) shopping
(12) riding bike
(13) writing
(14) walking
(15) speaking Chinese
(16) raining
(17) doing homework
(18) playing game
(19) sleeping
(20) taking bath/shower