【推荐1】The particles of dust in the air__________(对……不明显) the naked eyes. （根据汉语提示完成句子）

【推荐2】听说你要去访问一个中国家庭，我非常高兴。你有必要了解一下中国的餐桌礼仪。
I’m more than delighted to learn that you are going to visit a Chinese family. _______________ the table manners of China.

【推荐3】当把所有空闲的时间都用来看电视时，他们还能学到什么东西呢?
How can they learn anything when they ______ ______ ______ ______ ______ ______ television?

【推荐1】You must come ________ and have ________.
你想什么时候来就可以来，想吃什么就吃什么。

【推荐2】___________(尽管你付出了努力), you may not succeed sometimes. In this case, _______(不要失去信心). Kobe Bryant ________________(为……树立了一个好榜样）us. ___________(即使) he is no longer with us, his Black Mamba spirit will inspire us forever. (根据汉语提示完成句子）

【推荐3】通过简单地规划路线, 你可以随意探索, 随时随地想停就停。(whenever; wherever )
By simply planning a route, you can explore at will and _________________________________ .