A true friend is a person ________ will always be there to share your laughter and tears.
what
which
who
whom
The children are _______ in studying.
----Could you do ____ for me, please? Yes, with pleasure.
The radio is too noisy. Would you please ______ a little?
The cookies ________ good. Could I have some more?
—How do you usually go to school? —I usually go to school ______.