第1个回答 2012-07-10
How many days of your summer vacation?
第2个回答 2012-07-10
How many days of your summer vacation? 71 days
第3个回答 2012-07-10
How many days do have for summer vacation?
How long is summer break for you?
第4个回答 2012-07-10
直接说
How long is your summer vacation?
或
How many days does your summer vacation cover?
第5个回答 2012-07-10
how many days are there in your summer vocation.