用所给单词适当形式填空：If you are ill,you must___(drink) much water.
问题描述：
用所给单词适当形式填空：If you are ill,you must___(drink) much water.
There ____(be) fewer animals living here in ten years.
答
1.drink,must情态动词,后面动词用原形
2.in ten years表示在十年内,表示将来时,所以填will be