Giúp mik với ạ:((( Sometimes it is necessary to (1) _____ our habits. Saving energy is one illustration. If we can (2) _____ more energy, such as water and electricity, we can help keep the natural environment safe. Saving water, for example, helps preserve our rivers and reservoirs. If we usually take 10-minute showers, in this case we should try to take shorter showers. When we go out, we (3) _____ remember to shut off electricity like televisions and computers. Turning (4) _____ the lights is another example of savings electricity. In short, remembering to help the environment, such as by saving energy, is one of our most (5) _____ responsibilities. 1. A. exchange B. turn C. change D. make 2. A. help B. cut C. saving D. save 3. A. must B. may C. had D. should 4. A. on B. in C. without D. off 5. A. important B. basic C. necessary D. main Rewrite the following sentences without changing their meanings 1. It’s three months since she started learning French. She 2. Because you speak English unnaturally, they do not understand you. If you 3. What a pity you can’t take part in our trip. I wish 4. Brenda is my close friend. She went on holiday with me. Brenda, who 5. Although it is raining heavily, they still go to school. In spite