I.根据所给汉语完成下列英语句子
1.The river is ____________________ ______（半米深）.
2.The mountain is ________________________（648米高）.
3.Tom is ___________________________（比我小两岁）.
4.Beijing is __________________________（数千公里远）.
5.China is over _____________________（5，000年的历史）.
