1 . 看起来这的水好像不干净，不宜游泳。
It looked __________ __________ the water isn’t clean enough to swim here.

2 . The campus, covered with cherry tree flowers, ______ ______ ______ (看起来似乎) it is covered with pink snow. （根据汉语提示完成句子）

3 . Tom was absent. That was_______he was ill.
Tom旷课了。那是因为他病了。