his baseball is in the backpack(对这句话提问is in the backpack)
( ) ( )his book is on the
my English book is on the chair (改为一般疑问句)
( )( )English book on the chair
were are my keys(补充)on the table
they`re my sister变单数形式
( )my( )
were is your diconnary 变复数形式
( )( )you( )