.../2. ../3. .../4. ...TEST 16TEST 16

1. .../2. ../3. .../4. ...Test 16I. Give the correct form of the verbs given:he search for alternative resources of energy (result) 1. ... in various directions. Many communitiesT(burn) 2. ... garbage and other biological waste products to produce electricity. Changing waste productsinto gases or oil is also an efficient way to dispose of waste. Experimental work (do) 3 ... to makesynthetic fuels from coal, or coal tars. But to date, that process (prove) 4. .... expensive. Other experimentsare underway to harness power with giant windmills. Geothermal power, heat from the earth, (also/ test)