—I wonder ________?
—I’m not sure. Let’s ask Miss Li for help.
which subject should we choose
what we can do with the rest materials
that Bob went to the library just now
Please __ your notebook to school. I want to use (用) it.
Listen! Some birds are singing __ the tree!
We can see__ old bike __the tree.
--Is your hat on the sofa?
--Where __ my pictures?--They’re on the desk.