12.1
2.Didn't work
3. Didn't go
4. Didn't has
5. Didn't do
12.2
2. Did you enjoy the party?
3. Did you have a nice vacation?
4. Did you finish work easily?
5. Did you sleep well last night?
12.3
2. I didn't get up before 7 o'clock yesterday.
3. I took a shower yesterday.
4. I didn't buy a magazine yesterday.
5. I didn't go to bed before 10:30 yesterday.