they are their good friands改为一般疑问句

they are their good friands改为一般疑问句 they are their erasers 改为一般疑问句 these are their parents(改为一般疑问句) these are their friends. [改为一般疑问句】 they are going to their teacher 's house.改为一般疑问句 They are swimming.(改为一般疑问句) They are speak English 改为一般疑问句 They are happy.改为一般疑问句, they are nine改为一般疑问句 they are my grandparents 改为一般疑问句 They are pretty 改为一般疑问句 They are drivers.改为一般疑问句