Name: Date: Mark 1. Fill the blanks using the conditional form. Einstein is reported to have said, "if I had known the destruction I would cause, 11) (become) a watch-maker." If we 2) (continue) to use nuclear (make) our planet uninhabitable. If the (be) more aware of the dangers, they 5) (demand) energy as a means of defence, we 3) public 4) the right to live in a safer society. If the Cold War had developed into World War III, the human race 6) (be/wiped out) for ever. Unless we 7) (discover) a way to prevent nuclear war. By the 21" century, we 8) disaster. Some scientists claim that if we 9) the universe, we 10), source of power. Only if we 11). defence, 12) 13) (face) major (tap into) the natural energy in (provide) ourselves with a never-ending, pollution-free (put) more money into research and less into (we/be able to) discover other forms of energy, As long as we (continue) abuse knowledge and power, the earth 14) (remain) an insecure planet to inhabit.​