1.Linda froze when she saw the picture。(froze下划线)
2.We should stop them from polluting water。(polluting 下划线)
3.I didn´t wash clothes by myself in the first place。(in the first place下划线)
4.Students should obey teachers at school。(obey下划线)
5.All water returns to the sea in the end。(returns下划线)