根据首字母提示完成下文的英语短文填空
The most important drink is water.Not many people understand this 51b____ it is quite true.People can 52.l___for a long time without 53.f____,but they will die 54.i______two or three days without water .In55.h____weather,many people do not drink 56.e____water,because they don't know how much water they57.n_____.After taking exercise,people need more 58.w_________.The water in the man's body is 59.m____more than other matters.We'd60.b______have enough water ,or we may get ill.