The reason ________ he explained was________ he was ill and unable to go to school.
| A．why; that | B．why; because | C．which; because | D．which; that |
Students are encouraged to _________ the design competition for robots at the university.
| A．take part | B．operate | C．join to | D．participate in |
I have never imagined _______ such a good hotel in this town.
| A．there having | B．there’s being | C．there being | D．there have |
Many applicants stood 
outside the manager’s office, nervously waiting _________ for the job.
| A．to choose | B．being chosen | C．choosing | D．to be chosen |
She was so sad because she failed in the math test. Let’s ______ her _______.
| A．leave … behind | B．leave … alone | C．leave … aside | D．leave … out |
With the guide ________ the way, we finally got to the village which we were looking for.
| A．led | B．leading | C．to lead | D．had led |