根据首字母及句意补全单词 

1. Could you buy some drinks  and s          ?

2. My bicycle is broken. Could I b             yours?

3. Could you please help me take c            of my grandma for a moment?

4. The floor is so dirty that you must s            it right now.

5. Your clothes are very clean. Do you often do the l            on Sunday?

民航空管运行中凡涉及（）的，相关单位和人员应当明确安全责任。

A.人员派遣

B.工作代理

C.设备租赁和信息服务

D.以上都是