Choose the letter A, B, C or D to indicate a meaningful sentence from the words and phrases given 1. We/ use/ sources/ energy more effectively/ our future. A. We will use sources of energy more effectively to our future. B. We will be used sources of energy more effectively to our future. C. We will be used sources of energy more effectively for our future. D. We will use sources of energy more effectively for our future. 2. Hydroelectric power/ used/ produce/ electricity. A. Hydroelectric power is used to produce electricity. B. Hydroelectric power is used to producing electricity. C. Hydroelectric power are used to produce electricity. D. Hydroelectric power are used to producing electricity. 3. In/ future, most/ Vietnamese people/ speak English well. A. In future, most of Vietnamese people speak English well. B. In the future, most of Vietnamese people don’t speak English well. C. In future, most of Vietnamese people won’t speak English well. D. In the future, most of Vietnamese people will speak English well. 4. I/ have/ seen/ flying car. A. I have never seen a flying car before. B. I have ever seen a flying car before. C. I have never seen a flying car last month. D. I have never see a flying car before.