根据中文提示, 完成下列句子, 每条横线上填写一个词。

小题1:美国警方现已加紧对一名15岁的男孩搜索，该男孩三天前在多佛市失踪。

Police in America have _______ ______ their search for a fifteen-year-old boy who went missing three days ago in Dover.

小题2:人们也发现过一些巨大脚印，有人称他们属于野人。

Large tracks have also been discovered which some people say ______ _____ the Wild Man.

小题3:作为保护措施，你得戴上头盔，穿上救生衣，以防万一掉进水里。

You have to wear a helmet and a life jacket _____ ______ , just in case you fall into the water .

小题4:山脚下，阳光照在星罗棋布的湖面上，使它们在富丽乡村景色的映衬下，如钻石般闪耀璀璨。

Below the mountains, the sunshine reflects on the many lakes, _______ them shine like diamonds ________ the rich countryside .

小题5:一旦被人吸入，它们就可能导致疾病甚至死亡。

If breathed in , they can _______ _______ illness or even death.