【推荐1】这台机器有好几个用途， 最主要的是它能使你得到干净的水。
This machine ________   ________   ________; the most important one is that it can let you ________   ________   ________ clean water.

【推荐1】但是，确实有人在来来往往。正当布鲁诺心里斗争着如何是好的时候，他听到楼下传来一阵骚动的声音。于是他跑到走廊上，向下望去。
But there were definitely people coming and going, and as he__________ what to do for the best he heard a terrible commotion __________ from downstairs and hallway to look __________ the banister.

【推荐3】At that moment, Jack noticed a tear _______________________________.

就在那一刻，杰克注意到祖父眼角流下了一滴眼泪。

【推荐3】The surroundings in the forest ________ those I saw in our city, thus immediately stimulating my interest.
森林里的环境和我在城市看到的很不一样，因此立刻激起了我的兴趣。