A. awkward B. be supposed to C. break into D. sunglasses A. for the first time B. contract C. nucleus D. metaphor A. production B. see you C. electricity D. down A. potassium B. Mid-Autumn C. glance D. communication A. underground B. reference C. glance through D. oxygen A. Spanish B. ordinary C. plate D. double A. mutton B. dissolve C. cancel D. droop A. think highly of B. indefinable C. appropriate D. used to A. be proud of B. academy C. self-discipline D. eating A. equipment B. calculate C. mom D. envelope