Answer:
1) are sitting ; having ; watching
2) is reading ; is washing ; is watching ; am doing
3) are swimming ; is reading ; is drinking
4) is driving ; is talking
5) are sleeping ; am watching
6) are going
7) is helping ; are preparing
8) is wearing
9) am trying
10) is brushing
11) is planting
12) are climbing ; are having
13) am doing
Explanation:
singular ( 1 ) - is
plural ( > 1 ) - are
