1, ..., you should get rid of sweet food.
2, ... usually go to the sea to enjoy the freshness.
3, ..., I would live in England.
4, ... if they want to live longer.
II
1, We last visited England three months ago.
2, His family has a good time during their meals together.
3, This is the bookshop in which I bought the book yesterday.
4, She cooks very well because she has joined a cooking class.
5, She is the English teacher who has taught us for four years.
6, Son Dong Cave is one of the biggest cave in the world.