完成句子
第一次世界大战于1914年6月28日爆发。
World War Ⅰ                  on 28 June 1914.
太空充满了奥秘。
Space is                 mystery.
海伦打算去看电影，不打算看电视节目。
Helen is going to see a film                   watching TV programmes.
令她吃惊的是，那个男孩很快解决了那道题。
her        , that boy solved the difficult problem quickly.
他看起来很难过，因为昨晚有人闯入他家拿走了他的电脑。
He looks very sad because someone                his house and took away his computer last night.