The girl looked at me with a ____expression. Maybe the problem was quite ___.
| A．puzzled; puzzling | B．puzzling; puzzled | C．puzzled; puzzled | D．puzzling; puzzling |
The teacher made a request that all the homework_______ before class.
| A．should hand in | B．must be handed in |
| C．be handed in | D．were handed in |
The key______ the problem of traffic jams is to pay the “ congestion charge” ______ by the mayor of London.
| A．to solving; introducing |
| B．to solve; introducing |
| C．to solving; introduced |
| D．to solve; introduced |
----- Will 2000 yuan_______ the cost of the damage ?
------ I’m afraid not. I need at least 5000 yuan.
| A．cover | B．do |
| C．include | D．afford |
Chairman Xi spoke of China’s desire to see_______great progress from _____ two-week climate conference in Copenhagen.
| A．a; the | B．the; a |
| C．/; the | D．the; / |
I suggested that we break off for tea in a(an) _______ to reduce nervousness.
| A．attempt | B．thought |
| C．preparation | D．expectation |