Farmers work hard ______ (in/on) their farms Farmers use water by ______(to/for) watering the
问题描述：
Farmers work hard ______ (in/on) their farms Farmers use water by ______(to/for) watering the
flowers
We can save water by ______(playing/not playing) water games
答
1on the farm用介词on 固定用法
2to 因为use后面是to do sth但是后面却是wating 动名词所以用for表示为了 use for句型表示使用什么为了做什么
3not playing 节约水肯定是不打水仗 因此是否定