10. will invite
11. will not play
12. saw
13. does your mother cook ...
14. made
15. spent
16. Where did you spend last sum¬mer?
17. Where will you spend
18. What is mother doing now? — She is cooking din¬ner.
19. did not play
20. went
21. met
22. wrote
23. will you write
24. am not writing