Read the following passage, then choose the correct answer to questions 26 - 30. Solar energy is a long lasting source of energy, and it can (26)________almost anywhere. To generate solar energy, we only need solar cells and (27)________! Solar cells can easily be installed on house (28)________, so we don’t need any new space. Compared to other renewable sources, they also possess many advantages: wind and water power rely on turbines which (29)________noisy, expensive and which take up large space. Solar cells are totally silent and (30)________. As they have no moving parts, they require little maintenance and have a long lifetime.