短文填空，根据首字母和句意完成单词。
In the desert it may not r for five years . Then one day a storm c .A heavy rain falls .All at once the desert is covered w green grass. You can see many small flowers .They g very very fast .In one week they go from seed to flower and b .Then the speed l the sand ,perhaps to wait a five years for rain.
Desert plants try very hard to find water, some plants send their roots far down into the sand . Some plants send their roots far out from their stems . other plants save (储存) water in their stems or leaves.
Desert animals also save every drop of rain . A camel stores it in its b . It stores enough water to l from seven to nine days . A camel know how to find water .A man l in the desert knows his camel will help him .It will find a water hole.