完成句子。

1 ．他说了一些有趣的话结束了他的演说.( conclude)

        He__________his speech___________some amusing remarks.

2 ．明天我还有个重要会议要参加.(attend)

       I have an important meeting__________tomorrow.

3 ．我回来的时候我儿子正全神贯注地玩玩具.(absorb)

       My son________his toys when I came back.

4 ．毋庸置疑,心脏病与吸烟有所联系.(link)

       Undoubtedly,heart disease can________smoking.

5 ．除了说英语外,他还会说法语.(addition)

       He speaks French__________English.

什么是联合战场管制？