题目内容：

根据语境及所给汉语提示，写出所缺短语。

1.Sometimes, they _________(迟到) class.

2.Uncle Li works at a(n) _________(广播电台).

3.Why is your mother always busy _________(在周末)?

4.Sally and I are in the library _________(从两点到三点) in the afternoon.

5.—_________(几点) is Bill's birthday party?

—At 7:15 p.m.