hoá 9 nêu phương pháp hoá học của 3 dung dịch mất nhãn đựng riêng biệt : H2SO4,HCL,NA2SO4

Ag(1)và gốc NO3(1)

1. she asked me,“are you going to take the level exam this weekend?” 2.“Do you like to pop music,Mai?”,I asked 3.Louis said“I have only had this new computer since yesterday.” 4.“howuch are the course fees?”,I asked the secretary

Ann asked me,“please don't tell anybody what happened. ”

“would you like to come on a picnic with me?”. Mike told Mary

“when will your course begin?”,my mother said

She told me,“Jim may arrive late today”