英语正确的形式填空

英语正确的形式填空
1.The twins saved the girl's life .They are ___(hero).
2.Robert and his friends walked home together in ____(silent).
3.Do you know the _____(mean)of this word?
4.While I wsa watching TV ,my friend _____(call)me.
5.My sister is _____(scare)of tigers.
6.He ________(lie)on the ground when I saw him.
7.The number of her ______(flight)out of Beijing is No.HU7382.
8.I had a_______(usual)experience on Sunday .