FILL IN THE NUMBERED BLANK IN THE PASSAGE WITH ONE SUITABLE WORD. (...

2. Fill in the numbered blank in the passage with one suitable word. (1pts)Many countries are already using solar (1)__________. Solar energy are placed (2)_______ the roofs of a house and the Sun’s energy is used to (3)________ water. The energy can be stored for a number of days, so on (4)_________ days you can use solar energy, too. V. Write a new sentence as similar as possible in the meaning to the original sentence, using the word(s) given or do as directed.( 2pts)