CONDITION - 01

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

PUT THE VERBS IN THE CORRECT TENSE


1. If all our current electricity (COME) from the waves, it (COST) less and we (NOT POLLUTE) the atmosphere with fossil-fuel power plants.
2. If investors (PROVIDE) the necessary funds, the research team (BUILD) a full-scale prototype long ago.
3. Electricity produced by the Wave Energy System (NEVER REACH) our homes unless the E.P.A. (APPROVE) the device.
4. If they (SET) up a 40 m by 20 m parabolic bay on the beach last year as planned, it (PRODUCE) enough power for 2,000 households.
5. One day soon, electricity production (BE) clean and cheap, provided the government (SUPPORT) the project.