Having never met with such a _____ problem, he felt _____ and didn’t know how to solve it.
| A．puzzling; puzzled | B．puzzled; puzzling |
| C．puzzling; puzzling | D．puzzled; puzzled |
The coach asked his staff to_____the large group of journalists waiting for him to announce his training plans.
| A．adapt to | B．attend to | C．refer to | D．appeal to |
With the price of ______ petrol rising, the bicycle may become ______ popular means of transportation again.
| A．the; a | B．the; the | C．/; a | D．/; the |
________all kinds of difficulties，the workers have made rapid progress in the construction of the World Expo 2010 Shanghai．
| A．With | B．For | C．Under | D．Beyond |
_______of the household rubbish________recycled or reused since the new technology was applied.
| A．Three-fourth; has | B．Three-fourth; have been |
| C．Three-fourths; has been | D．Three-fourths; have |
Health problems are closely connected with bad eating habits and a________of exercise.
| A．limit | B．lack | C．need | D．demand |