A. workmate B. canyon C. ventilate D. ninepin A. peacock B. incur C. set D. brother A. backward B. restroom C. safekeeping D. research A. hearing B. let out C. file D. unduly A. robust B. laughed C. cafeteria D. go well A. senior B. interstellar C. imagination D. desert A. voyage B. flint C. tadpole D. disunited A. ageing B. arouse C. sediment D. best-seller A. get in B. be connected with C. myxomatosis D. thermodynamics A. the greenhouse effect B. while C. social media D. chasm