根據各句子的內容，完成句中已給出了首字母的單詞。

1．Look! The cat is c         up the tree．

2．W        we were having supper the phone rang．

3．I can’t find my pet dog a          ．

4．It's not right to c          others’ homework．

5．Mother was cooking in the k          when I came back．

6．I don't like the book．He doesn’t like it，e         ．