【推荐2】他注意到自己在街上散步时被一个陌生人跟踪着。(过去进行时)
He noticed that he ________ when he was walking in the street.

【推荐3】当(这两个单词)被陌生人说时，它们可以作为吸引你注意的一种手段。
_________________________, they can function as a means of attracting your attention.

【推荐1】几秒钟后，我们的蜥蜴从它的水箱里出来，旧皮肤在它后面飘动着。
Seconds later, our lizard emerged from its tank ________ its old skin ________ behind it.

【推荐3】当风雨停了下来，我向窗外望去，只见大树横躺在街道上，到处都是水!
When the wind and rain stopped, I looked out of the window, ______ ______ see huge trees _______ across the street and water everywhere!