18)Reading,feeding,drinking,opening,staying,playing,giving,smiling,taking,having,decorating,celebrating,stopping,sitting,running,putting,getting,swimming.
19)1.Chris is taking photos of his friends.
2.The schoolchirlden are decorating the hall.
3.Sue is doing her homework.
4.it is raining again.
5.i am cleaning my room.
6.Her brothers are playing an interesting computer game.