Lucy's backpack is behind the chair.(改为同义句)Lucy's backpack is_____ _____ _____ the chair.

问题描述:

Lucy's backpack is behind the chair.(改为同义句)
Lucy's backpack is_____ _____ _____ the chair.

是不是少打了一空?
Lucy's backpack is behind the chair.(改为同义句)

= Lucy's backpack is (at the back of) the chair.