A. comprehensive B. tractor C. necessity D. agent A. textbook B. holly C. engineering D. countryside A. stairs B. muffle C. endeavour D. conductor A. thirty B. in charge C. spire D. clean the floor A. horizon B. onto C. bell D. patience A. portrait B. Mars C. play jokes on D. swimming suit A. cute B. pedestrian C. engine D. orbit A. What's worse B. parden C. settle D. spell A. hearing loss B. leave behind C. infinitely D. mad A. pump B. zigzag C. favour D. dishwasher