Mark the letter A, B, C or D to indicate the correct answer in each of the following question 1) Flying cars would be especially useful in cities _______ with traffic. A. joined B. crashed C. congested D. exhausted 2) Teleporters make you _______ and the reappear at your destination. A. appear B. disappear C. to appear D. to disappear 3) They were _______ because of the poor quality of their equipment. A. success B. successful C. unsuccessful D. successfully 4) Electric cars are growing in _______. A. popular B. popularity C. unpopular D. populating 5) I think I’d prefer something a little less ________. A. energy B. solar panels C. footprint D. turbine