根据句意和所给单词首字母或汉语提示填空。

1.—What t_____ do you go to school?

   —At 7:00.

2.I often get up early in the m _____.

3.After getting up ,he usually b_____ his teeth first.

4.T_____ for your help.

5.On _____（星期六）we often play games together.

建筑企业材料储备是生产储备又分为经常储备、保险储备和（）。

A.临时储备

B.年度储备

C.季节储备

D.必要储备