A. would rather B. vanished C. human race D. collection A. let down B. emit C. run out of D. water ski A. friendship B. oral C. second floor D. upon A. drug B. date C. queen D. exhibit A. teammate B. dropped C. carry out D. quintuplet A. inexpensive B. fame C. odds D. mammal A. churn B. nod C. astonishing D. commercialization A. nor B. taxi C. pop music D. work from home A. examine B. choir C. Venus D. sit down A. tell jokes B. tentative C. stumble D. lately