1. The solar lamps are lighting the tunnel. The solar lamps were lighting the tunnel. The solar lamps will be lighting the tunnel. 2. The scientist is developing a new source of energy. The scientist was developing a new source of energy. The scientist will be developing a new source of energy. 3. The engineers are working at the problem of using solar power. The engineers were working at the problem of using solar power. The engineers will be working at the problem of using solar power. 4. The people are not using poor methods of research. The people were not using poor methods of research. The people will not be using poor methods of research. 5. The students are not having an interesting discussion. The students were not having an interesting discussion. The students will not be having an interesting discussion. 6. The sun is not shining brightly. The sun was not shining brightly. The sun will not be shining brightly. 7. The workers are complaining about unsafe working conditions. The workers were complaining about unsafe working conditions. The workers will be complaining about unsafe working conditions. 8. The government is trying to protect consumers. The government was trying to protect consumers. The government will be trying to protect consumers.
They denied…….the window. (having broken) The baby began …………in the middle of the night. (crying). They decided ……the homework. (to do) I don’t want ……….to the cinema. (to go) Has it stopped ………yet? (snowing) Please remember …….off the light when you go out. (to turn) She remembered ………the door when she left. (locking) Tom now regrets ……..what he said. (saying) I am absolutely sure I locked the door. I do remember ……..it. (locking) The batteries in the radio need ……... (changing) I need …….. batteries in the radio. (to change)
2. The scientist is developing a new source of energy. The scientist was developing a new source of energy. The scientist will be developing a new source of energy.
3. The engineers are working at the problem of using solar power. The engineers were working at the problem of using solar power. The engineers will be working at the problem of using solar power.
4. The people are not using poor methods of research. The people were not using poor methods of research. The people will not be using poor methods of research.
5. The students are not having an interesting discussion. The students were not having an interesting discussion. The students will not be having an interesting discussion.
6. The sun is not shining brightly. The sun was not shining brightly. The sun will not be shining brightly.
7. The workers are complaining about unsafe working conditions. The workers were complaining about unsafe working conditions. The workers will be complaining about unsafe working conditions.
8. The government is trying to protect consumers. The government was trying to protect consumers. The government will be trying to protect consumers.
The baby began …………in the middle of the night. (crying).
They decided ……the homework. (to do)
I don’t want ……….to the cinema. (to go)
Has it stopped ………yet? (snowing)
Please remember …….off the light when you go out. (to turn)
She remembered ………the door when she left. (locking)
Tom now regrets ……..what he said. (saying)
I am absolutely sure I locked the door. I do remember ……..it. (locking)
The batteries in the radio need ……... (changing)
I need …….. batteries in the radio. (to change)