Unit 3 - Review Exercise 2 Fill in the blanks with the past form of the verbs.#1. Franklin _______ (be) also an important scientist and inventor. #2. He ______ (draw) electricity from a cloud on a kite string. #3. He _______ (write) one of the first text books on electricity. #4. He ________ (invent) a simple lightning rod and many other practical tools. #5. He _______ (make) a study of water and #6. ________ (discover) many principles of hydrodynamics. #7. He even ______ (invent) bifocal glasses when he was seventy-eight and #8. ______ (need) them himself. #9. Franklin ______ (do) all these things and many more because #10. he ________(believe) he could. next Results
