题目内容：

根据句意和提示写出单词，完成句子，每空一词。

1.The boy had no difficulty            （解释）the answers to his classmates.

2.My cousin was busy          （回复）to his pen friend when I came to visit him.

3.We need ___________(安静)when we are studying in the classroom.

4.Yao Ming scored 41 points in a game ___________ (对抗)the Atlanta Hawks.

5.If the man         （拒绝）to leave, call the police.