If we plant trees here，the wind and water ________ ________ ________ the soil.

If you don't know the word，please ________ ________ ________ in the dictionary.

When it gets warmer，ice ________ ________ water.

He hasn't ________（写）to me for three months. I wonder what's happened to him.

________（面粉）is made from grain. It's used for making bread, cakes and so on.

Soon, it grew a _______ and a ________（茎和叶）.

________ _______（上周）, I wrote a report about agriculture.

Its seeds ________ ________（被叫做）“grain”.