缺词填空Which is the most useful thing for us?Of all the things

缺词填空
Which is the most useful thing for us?Of all the things we eat and drink, water is the most i____1_____. Not many people u____2____this, but it is quite t____3____. The human body can go without f_____4____ for a long time, but two orthree days without water usually make people d____5____.Many people do not understand how much water the human bodies n____6___ to work well andthey do not drink enough water, especially in h____7____ weather. Most people drink only when theywant to drink. But in fact they often need m_____8___ water especially after doing s____9_____. Aman’s body is 5 to 75 percent water. If we do not have enough water, we feel tired and may becomei____10_____.