(2014·山西高三上学期诊断考试)Chengdu has focused on improving the surrounding countryside，________encouraging large­scale city expansion.

Lisa is a little poor at Chinese. I think she needs _________ it every day.

Would you like some food, Lingling—Sure, I`d like some_______.

Tens of millions of Internet users make mostof the half-price promotion and it isgoodopportunity for online shopkeepers to get their names known

Water is a liquid which has no color _______ you wash your hands in it, then it turns black.[ ]