第1个回答 2010-06-12
when do you have science classes?本回答被提问者采纳
第2个回答 2010-06-12
when do you have science classes
第3个回答 2010-06-12
When did you have science classes?
第4个回答 2010-06-12
When did you have science classes
第5个回答 2010-06-12
when do you have your science class