Though he was born and brought up in Australia, he can speak ______ Chinese. 

—Have you seen my pen bought during my visit to Hong Kong Disneyland?—Oh, Jane must have taken it _________ ; she has the same one as yours.

The book you want is not ___now. I will let you know as soon as it is returned to the library.

 Now that there is much difficulty in finding a satisfying job，why don’t you do a _____ job to support you for the time being?

In recent decades, China is becoming one of the most _____countries in the world.