A. though B. get C. luggage D. is A. infinitely B. structure C. o'clock D. piano A. ID number B. host C. leisure D. tiger A. human being B. steamship C. cloth D. get up A. assessment B. lion C. tornado D. global warming A. panda B. ring off C. illness D. maybe A. doesn't B. quarter C. blank D. mournful A. adjust to B. limit C. make mistakes D. half A. backward B. meat C. invest D. one by one A. alternative B. past C. in theory D. tribe