Ⅰ.单项选择(每小题1分，共15分)
( )1．I didn't go to the beach ______ vacation.I stayed ______ home.
A．for；in B．on；at C．on；in
( )2．Did you do ______ in the park last Sunday?
A.something interesting B.interesting something C.anyth ing interesting
( )3．They usually go shopping ______.
A．one a week B．once a week C．once week
( )4．His mother wants him______at home today.
A．stays B．stayed C．to stay
