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．Lily has her arms ________(cross) and looks upset.
2．Though the meeting only ________(last) for a few minutes, it was very funny.
3．Three days ago, Jack came to my house along ________ his wife.
4．These books were sent to our school free ________charge.
