用所给单词的正确形式填空.1.Could you please help ___(clean)the park?2.It
用所给单词的正确形式填空.1.Could you please help ___(clean)the park?2.It's bad ___(copy)
2.It's bad ___(copy)others' homework.
3.The old man often sells books ___(make)money.
4.___(sell)books is a way ___(make)money.