Chọn đáp án đúng nhất (Nhớ ghi giải thích) 1. The villagers are interested in __________ Natural resources but they don't know how to do so. A. To conserve B. Conserve C. Conserving D. Conserved 2. The girl was not pretty but she sang _________. A. Beauty B. More beautiful C. Beautiful D. Beautifully 3. Check the faucets for dripping water __________ you will have to pay an anomous water bill. A. Although B. Or C. Because D. However 4. If we ______ wasting water, there will be shortage of fresh water in a few decades. A. Turn on B. Turn off C. Go on D. Look for 5. Many women nowadays are fond of ________ football. A. Playing B. To play C. Play D. Played 6. The doctor suggested that the secretary ____________ at least three days off work. A. To have B. Having C. Should have D. Have 7. My brother was ________ as the most effective activist in the school charity programme. A. Said B. Nominated C. Invited D. Appointed