1 . Please read your article in a loud voice to make yourself ________ (hear) clearly by all. (所给词的适当形式填空)

2 . Only by shouting at the top of his voice was he able to make himself ________ (hear). (所给词的适当形式填空)

3 . Suddenly a shrill whistle ________(hear). Heidi paused in her dancing, and the grandfather came out. (所给词的适当形式填空)

4 . He raised his voice in order to make himself ________ (hear). （所给词的适当形式填空）

5 . He left his hometown, never ________ (hear) from again. (所给词的适当形式填空)

6 . Upon ________ (hear) the news that her mother was badly injured, the girl grabbed her bag and ran out of the classroom. (所给词的适当形式填空)

7 . I’m surprised __________(hear) that Sue and Paul have broken up.They seemed very happy together when I last saw them. (所给词的适当形式填空)

8 . The citizens were very pleased ________ (hear) that the city council approved of the scheme provided by them. (所给词的适当形式填空)

9 . This is the first time that I ________ (hear) such strange things ! (所给词的适当形式填空)

10 . Up till now, no news ________ (hear) of the missing people in the flood. (所给词的适当形式填空)