1) 1. traveled 2. bought 3. sent 4. studied 5. gave 6. were 7. rained 8. flyed 9. wrote 10. baked.
2)1. didn't come 2. wasn't 3. didn't like 4. didn't speak 5. didn't meet 6. didn't drive 7. didn't understand 8. didn't receive 9. didn't cook 10. didn't go.
3) 1. when Pum come home?
2. where we went after school?
3. who ate a lot of sweets?
4. how many hours Susan slept yesterday?
5. how Paul traveled to France?
6. who Carol invited to her party?
7. how many you spend on a t-shirt?
8. when your brother woke up?
9. what Alan made for dinner?
4) 1. sing
2. study
3. we didn't late
4. runs
5. see
6. it were
7. plays
8. didn't do