The pupils here________all kinds of exercises every day in the past four weeks.
| A．kept busy doing |
| B．keep on doing |
| C．have kept busy doing |
| D．have been kept busy doing |
"Perhaps we need to send for Dr. Smith to see what we can do about it, " Father suggested __________ to his neighbor who had come to discuss the problem.
| A．tentatively |
| B．thoughtlessly |
| C．definitely |
| D．rudely |
I often __________ the words I don't know in the dictionary or on the internet.
| A．look up |
| B．look at |
| C．kook for |
| D．look into |
(2009·天津) The art show was __________ being a failure; it was a great success.
| A．far from |
| B．along with |
| C．next to |
| D．regardless of |
(2009·湖北) As there is less and less coal and oil, scientists are exploring new ways of making use of __________ energy, such as sunlight, wind and water for power and fuel.
| A．primary |
| B．alternative |
| C．instant |
| D．unique |
It is reported that the police will soon __________ the case of two missing children.
| A．look upon |
| B．look after |
| C．look into |
| D．look out |