When he looked up，he suddenly found himself________by a group of teenagers，________looked at him anxiously.
| A．to be surrounded；which | B．surrounded；who |
| C．be surrounded；who | D．having been surrounded；which |
My friend Tim knows my hometown very well because he ___ there many times with me.
| A．has been |
| B．has gone |
| C．had gone |
| D．went |
After the Asian Games, ___ people came to Guangzhou for a visit during holidays.
| A．thousand |
| B．thousands of |
| C．five thousands |
| D．five thousands of |
—Could you tell me where Jim is? I want to return the bike to him.
—He ___ the library. He will be back soon.
| A．goes to |
| B．has gone to |
| C．has been to |
| D．went to |
I want to know ___ in our class.
| A．what happened |
| B．what’s happening |
| C．what’s happened |
| D．what will happen |
It took them ___ time to finish the challenging task.
| A．a number of |
| B．a lot |
| C．a great deal of |
| D．a good many |