—What were you doing when I called you at 8 p.m. yesterday? —I the piano at that time.
Miss Li regards all her students _______ her children.
There are _______ books on the shelf.
We should have _______ in ourselves and we will make it if we have a try.
If I _______ you, I’d buy that coat.
I wish you’d write _______ for us to read it.