(    )（3）The children have a lot of _____ at Christmas.

A．funny

B．fun

C．funs

在横线上填入合适的介词。（12分）
（1）I send the Christmas cards  my friends.
（2）We buy presents   our family.
（3）They put the presents   the Christmas tree.
（4）People have a big lunch   Christmas Day.
（6）I play the piano  four o’clock  the afternoon.