The committee __________ over the problem among themselves for two hours.
| A．has argued | B．has been arguing |
| C．have argued | D．have been arguing |
Generally speaking, ______ according to the directions, the drug has no side effect.
| A．when taking | B．when taken | C．when to take | D．when to be taken |
The computer was used in teaching. As a result, not only _____, but students became more interested in the lessons.
| A．saved was teachers’ energy | B．was teachers’ energy saved |
| C．teachers’ energy was saved | D．was saved teachers’ energy |
Have you got any particular plans for the coming holiday?
Yes. _____, I’m going to visit some homes for the old in the city.
| A．If ever | B．If busy | C．if anything | D．if possible |
Would you mind not picking the flowers in the garden? They are ______ everyone’s enjoyment.
| A．in | B．at | C．for | D．to |
Up to now, the program ______ thousands of children who would otherwise have died.
| A．would save | B．saves | C．had saved | D．has saved |