These are apple trees(改为单数句)
These are apple trees(改为单数句)
these pairs of tramers are under the trees 改为单数句
they aren't apple trees.改为单数句?
These are apple .改为否定句
Are these apple trees?(的否定答句)
Are these nice pictures 改为单数句
These are his brothers 改为单数句
These are yellow purses.(改为单数句)
These are dishes 改为单数句
These are my pencils改为单数句
These are his watch.改为单数句
are these old coats 改为单数句