7. The Great Wall of China is the world’s ………………… structure. (LONG)
9. We should not waste ………………… and water. (ELECTRIC)
10. Let him do it …………………. (HE)
7. The Great Wall of China is the world’s ………………… structure. (LONG)
9. We should not waste ………………… and water. (ELECTRIC)
10. Let him do it …………………. (HE)
7. longer
8. electricity
9. himself
7.longest
9.electricity