Five million, five hundred and fifteen thousand ,one hundred and fifty-one is _____.
He used to spend a lot of time computer games.
Great changes _____ in my hometown since 1980.
---I’m not hungry but thirsty. ---________
In which of the following places can you often see this sign?
— We can use QQ to talk with each other online. — Really? Could you please show me _______ it?