1、He spent the whole holiday （working）in a disabled children’s home.
2、In the past ,people didn’t have enough food （to eat）.
3、Our country has developed （rapidly）recently.
4、China has （the largest）population of 1.3 billion in the world.
5、There are several chemical factories （pouring）waste water into the streams.
6、I’ll manage （to leave）this place.
7、You’d better （not work ）in a sawmill（锯木厂）.
8、If you work in （noisy）conditions for long ,you may become deaf.
9、It’s very kind of you （to help）me with my English.
10、Actions speak （louder）than words.