Ответ:
1. When did he come home?
2. When did Mike and Pete meet?
3. When did she work as a clerk in an office?
4. When did Zina sing a song?
5. When did you study different subjects?
6. When did it often rain?
7. When did the grandfather stay with us for a week?
8. When did you get up last Monday?
9. When did they watch TV?
10. When did Ann read and learn the rhyme?