根据括号内的标点提示，把所给的单词组成句子。

1. is the my bed backpack under (.)

    ________________________________

2. parents your at are home (?)

    ________________________________

3. not that is his notebook (.)

    ________________________________

4. CDs where Jim's are (?)

    ________________________________

5. photo my family is here (.)

    ________________________________

燃烧器刚点完火，马上又熄灭，并显示燃烧器故障应（）

A、检查风门的灵活性，并保养；调节空气与燃气的配比

B、检查检漏电磁阀；检查检漏DW开关；检查LDU11密封控制装置

C、检查风门在静止时开度，调小此开度；检查火焰探测器；检查主控制器LFL1.322；检查控制箱接线是否紧固

D、检查控制配比的机械传动机构；检查风机风门的开度；检查助燃风压力低开关