根据音标拼写单词，使句子意思完整正确。

1. He [spendz] _____ too much time playing with them.

2. It's my first time to  _____ [ju:z] the computer

3. I usually go to bed at 9:00 but I can't go to _____ [sli:p] at once

4. He is busy _____ ['pr?ktisi?] organizing the activities

5. They are good _____ ['swim?z]

锅炉系统包括下列（）。

A.直流锅炉启动系统

B.点火及助燃燃料系统

C.锅炉辅助系统

D.除灰系统

E.烟气系统