Scientists are increasely _____ that the earth is getting hotter because of carbon dioxide and other gases.
| A．content | B．conscious | C．convinced | D．common |
The travel expenses __________$ 1,000.
| A．totalled |
| B．added up |
| C．added to |
| D．added |
—What should I do with this passage?
—__________ the main idea of each paragraph.
| A．Finding out |
| B．Found out |
| C．Find out |
| D．To find out |
We __________ him __________ his winning the first prize.
| A．congratulated ； in |
| B．congratulated ； on |
| C．celebrated ； in |
| D．celebrated ； on |
John is ill and has been __________ by Tom in our team in tomorrow's football match.
| A．replaced |
| B．recovered |
| C．realized |
| D．reduced |
She concentrated her energies __________ her test.
| A．on |
| B．to |
| C．with |
| D．of |