1. Construct a sentence from the words given: When/ they/ arrive/ shop/ buy/ fridge/ they/ know/ all/ fridges/ sell. A. When they arrived at the shop to buy a fridge, they knew that all fridges had been sold. B. When they arrived at the shop to buy a fridge, they knew that all fridges have been sold. C. When they arrive at the shop to buy a fridge, they know that all fridges had been sold. D. When they arrived at the shop to buy a fridge, they knew that all fridges had sold. 2. Change the following sentences into Passive voice: Rescue workers had taken local people to a safe place. * A. Local people had taken to a safe place by rescue workers. B. Local people had been taken to a safe place by rescue workers. C. Local people was taken to a safe place by rescue workers. D. Local people took to a safe place by rescue workers. 3. Change the following sentences into Active voice: All of the buildings in my neighbourhood were destroyed by the hurricane. * A. The hurricane was destroyed by all of the buildings in my neighbourhood. B. The hurricane had destroyed all of the buildings in my neighbourhood. C. The hurricane destroyed all of the buildings in my neighbourhood. D. The hurricane destroyed by all of the buildings in my neighbourhood. 4. Rewrite the sentence without changing its original meaning: One way to save the environment is using renewable energy sources. * A. Use renewable energy sources is to save the environment. B. We can save the environment by use renewable energy sources. C. Unless we use renewable energy sources, we will save the environment. D. If we use renewable energy sources, we will save the environment. 5. Combine the two following sentences into a new one that shows a cause/ effect relationship: We can't see the stars at night. There is too much light pollution. * A. Because we can't see the stars at night, there is too much light pollution. B. Due to the light pollution, we can't see the stars at night. C. There is too much light pollution leads to the fact that we can't see the stars at night. D. Since the light pollution, we can't see the stars at night.