选用适当的疑问词填空
1. — is your birthday?
—It's on 2nd August.
2. — are you?
—I'm 12.
3. — do you want to do on her birthday?
—I want to sing a song for her.
4. — are those oranges?
—Six yuan a kilo.
5. — kilos do you want?
—I want five kilos.

1. When 2. How old 3. What 4. How much
5. How many

【分析】解题时需先观察每个问句的答语，明确答语表达的核心内容，再匹配对应的疑问词：1.答语是日期，对应询问时间的疑问词；2.答语是年龄，对应询问年龄的疑问词；3.答语是想做的事，对应询问内容的疑问词；4.答语是价格，对应询问价格的疑问词；5.答语是可数名词的数量，对应询问可数数量的疑问词。
【解析】1.答语“on 2nd August”为日期，询问时间用疑问词When；2.答语“I'm 12”为年龄，询问年龄用How old；3.答语“sing a song”为想做的事，询问内容用What；4.答语“Six yuan a kilo”为价格，询问价格用How much；5.答语“five kilos”为可数名词的数量，询问可数数量用How many。
【答案】1. When 2. How old 3. What 4. How much 5. How many
【知识点】特殊疑问句；疑问词用法
【点评】本题考查英语常用疑问词的基本用法，需结合答语语境选择合适疑问词，属于基础题型，侧重基础词汇的掌握。
【难度系数】0.8