根据句意和首字母提示，补全单词
Most（大多数） fish don’t live on land. They live in the s______, lake and river.
The t______ is busy at this time of the day. There are so many cars in the street.
This computer is very c______. It is only 800 yuan.
Is your summer holiday l______ or short?
The sun r______ in the east in the morning.