句型转换,
There is no sugar in my tea.（变为同义句）
There （ ）( )sugar in my tea.
There are some pictures in the office.(变为否定句）
There （ ） （ ）pictures in the office.
There is a tree in front of the house.（变为一般疑问句）
（ ） （ )a tree in front of the house?
Are there any trees behind the playground?（作肯定回答）
Yes,( ) ( ).
Is there a pizza in the cabinet?（作肯定回答）
No,（ ） （ ）.