选择可替换划线部分的选项。 小题1:When is your birthday ? A. age                B. date of birth       C. day 小题2: How old is he ? A. How is he          B. How old is she      C. What’s his age 小题3: What time does she play basketball? A. Where              B. When               C. What 小题4:I often have lunch at 12:00. A. eat                 B. eats                C. has 小题5: She is 9 years old. A. She is 8 years old  B. Her age is 9        C. I am 9 years old