My uncle is still ___.
| A．on the holiday | B．on holiday | C．on a boliday | D．on holidays |
In some parts of London, missing a bus means ______for another hour.
A. waiting
B，to wait
C．wait
D. to be waiting
---How do you deal with the disagreement between the company and the customers?
---The key ______the problem is to meet the demand ______by the customers.
| A．to solve; made |
| B．to solving; made |
| C．to solve; making |
| D．to solving; making |
An old professor was giving a lecture,so our class teacher asked us ______so much noise.
| A．Don't make |
| B．not make |
| C．not making |
| D．not to make |
Paul doesn't have to be made ______. He always works hard.
| A．learn |
| B．to learn |
| C．learned |
| D．learning |
---You were brave enough to raise objection at the meeting.
---Well, now I regret ______ that.
| A．to do |
| B．to be doing |
| C．to have done |
| D．having done |