(1) _______ Sun has provided us with many uses. Thousands of years (2) _______ people began to dry clothes and food (3) _______ the sunlight. But its not until recently that we (4) _______ been able to generate power from it. There are three main (5) _______ of using the Suns energy: solar cells, solar (6) _______ heating and solar furnaces. One of the good points of solar energy is that it is an (7) _______ source. Moreover, it produces no waste or (8) _______. Therefore, in countries with sunny climate, solar energy has great (9) _______. However, it has come disadvantages as well, such as it doesnt work at (10) _______ and costs very high. 1. A. The B. A C. An D.X 2. A. before B. lately C. ago D. recently 3. A. on B. for C. in D. up 4. A. have B. has C. had D. to have 5. A. methods B. means C. styles D. ways 6. A. sir B. water C. soil D. wind 7. A. expensive B. non-renewable C. limited D. unlimited 8. A. pollution B. pollute C. polluted D. polluting 9. A. potent B. potential C. potentate D. potentially 10. A. noon B. day C. night D. morning