01: 2S
02: 2D (artificial, as you only have 3 HCP; it's a coincidence you also have diamonds!)
03: 2D
04: 3D (can't bid 2D as that would be the artificial 0-3 HCP bid)
05: 2NT (don't worry, partner won't pass)
06: 2NT (or 3C)
07: 2D
08: 3D (or 2NT)
09: 2NT
10: 3D
11: 2D
12: 2S
13: 3D
14: 2NT (or 3D)
15: 3C
16: 2D
17: 2NT
18: 3D
19: 2S
20: 2D