—Tom looks very sad. What’s wrong _______ him?
—An accident happened _______ his father this morning.

A．to; with	B．with; to
C．for; to	D．with; for

— Where is  the  post  office?
— It’s _____ the hospital.

A．in the front of	B．in the front
C．in front	D．in front of

When I met Daniel at the station ______ the first time, he was in the waiting hall _____.

A．for; alone	B．at; alone
C．for; himself	D．at; by himself