题目内容：

根据句意和汉语提示，在空白处填入适当的单词。

1.Liu Xiang is a very _______________（成功的）runner.

2. We hope that the little girl can tell us the _______________（真相）.

3. The presentation will be covered ______________（现场直播）.

4. Can you _____________（证明）that your answers are right?

5.Simon likes ______________（闲聊）with his friend on the Internet.