I bought a vase of the Ming dynasty at such a low price at the Sunday market. It was really a nice __________.

The rising house price and the high income tax rate have become the biggest ______ of the ordinary people in China today．

Would you mind my ______ her to the party? Would you mind not ______ to the party? 

You must get there within an hour. There should be no ______ in sending this information to him.

What’s the _________ of having a public open space where you can’t eat, drink or even simply hang out for a while?