21. May is the f______ month of a year.
22. December is the t______ month of a year.
23. A year has twelve m__________.
24. Teachers’ Day is in S__________.
25. When do you have the English s______ contest?
26. Is July ______ (二十号) your birthday?
27. His mother is a ______ (音乐) teacher.
28. Zhang Ming is the ______ (第二个) boy in his family.
29. My friends want to have a ______ (聚会) for my birthday.
30. We want to take a ______ (观光旅行).