A. floor B. air conditioning C. I'd like D. stick to doing sth A. awesome B. competitive C. show around D. handyman A. swing B. risky C. company D. ibis A. stay at home B. descendant C. keep one's cool D. classroom A. Japan B. first C. related to D. ethanol A. reservoir B. affair C. lock out D. great A. rock climbing B. become known as C. store D. third A. helmet B. stop C. cherub D. sandwich A. scholar B. one after another C. second D. caution A. sell B. self-improvement C. heavy D. viperine