... when B. before C. until D. sinceIII. AProfessor Meredith Thring, Professor of Mechanical Engineering at Queen MaryCollege, London showed off his latest invention to the Press yesterday. It ... hands of the coal miner as if they were his own. Themechanical miner could go down as deep as 10, 000 feet, and would cost 10, 000.“It Will put the cost of coal down because the cost of the ... the test B. After I take the test C. After I took the test D. After I taken the test 23. The traffic lights _______ to green and the cars drove on.A. exchanged B. turned C. removed D. shone24....