№20.
2) am;
3) are having;
4) 'm lying;
5) 's playing;
6) is watching;
7) 's swimming;
8) get up;
9) spend;
10) will go;
11) 'll take;
12) want.
№21.
2) is reading the newspaper;
3) always playing computer games with me;
4) chattering with me and my brother;
5) goes for a walk with me.