句型转换
The library is in front of the science lab (提问)
                                 .
There are some pears in Li Lei’s bag(否定句)
                                 .
Polly is five years old.（提问）
                               
                  (根据答语写出问句)
—The library?Oh,it’s next to the office.
There is no park on this street(改为同义句)
There         park on this street.