1、joy was in grade one last year.(改否定句、一般疑问句、肯定回答、否定回答、特殊疑问句）
2、lily was in qingdao yesterday.(改否定句、一般疑问句、肯定回答、否定回答、特殊疑问句）
3、i was at home the day before yesterday.(改否定句、一般疑问句、肯定回答、否定回答、特殊疑问句）
4、the twins were in a primary school last term.(改否定句、一般疑问句、肯定回答、否定回答、特殊疑问句）