HNO3->Cu(NO3)2->Cu->CuO->CuSO4

Поставте местоимение am/is/are . Oh! How old are you ... 1)........eleven. My sister goes to Hillside Secondary.2)......in class 4D. Is Dan a student? Yes 3)................ 4)...............at Broadoak School? Yes 5).......................... How old are Tom and Carrie? Tom is 12 and Carrie is 13. 6)...............students. Oh! Which school? Green School.7)...............a very good school.