Listen!The little girl____ singing in the room．（　　）

I have____ useful book．It is about how to playbasketball．（　　）

It is raining outside．Why not ____an umbrella．（　　）

The 24 ^thWinter Olympics will be held in China in 2022．

______good news it is!（　　）

I found a book in my room．Whose is it？

Oh，It is ____．Thank you．（　　）