Напишите формулы соединений элементов II группы: а) оксид кальция, б) гидрид магния, в) гидроксид бария,

Who is going to make a cake?
Does your sister enjoy listening to the radio?
Where did Sue hive when she was a child?

Who is going to make a cake?
How much money do you have in your pocket?
Does your sister enjoy listening to the radio?
Where did Sue hive when she was a child?