一、阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
1．Tom is ________(experience) in drawing.
2．Our teachers give messages ________(inform) our parents of any changes.
3．Will you help me prepare________the old classmates get－together?
4．Farmers have to leave their hometowns and go to work in cities, ________(struggle) to increase their income.
