20. There is only one day left for us in Hangzhou and we will have a ________ tour around the city.
| A．brief | B．common | C．single | D．Simple |
It’s nice to see you again. What _____ since we last met?
| A．have you done | B．had you done | C．have you been doing | D．did you do |
I bought a dress for only 10 dollars in a sale; it was a real ______.
| A．exchange | B．bargain | C．trade | D．business |
Prince William said he was delighted that the 2012 Olympic Games ________ in London.
| A．would be held | B．would hold | C．will be held | D．will hold |
Franklin’s ability to learn from observations and experience _____ greatly to his success in public life.
| A．owed | B．contributed | C．attached | D．related |
I can’t stand ___ with Jane in the same office. She just refuses ____ talking while she works.
| A．working; stopping | B．to work; stopping |
| C．working; to stop | D．to work; to stop |