A. May Day B. acre C. separate from D. factor A. Shanghai Museum B. music video C. go over D. worthwhile A. late B. radioactivity C. a pair of scissors D. impossible A. enjoy oneself B. acidic C. balance D. trough A. drought B. hectare C. else D. laundry A. morning exercises B. cheer C. byproduct D. sub-zero A. glue B. catwalk C. silly D. Merry Christmas A. nobody B. pick up C. a cup of D. addition A. obligation B. fan C. prehistoric D. New York A. virus B. fun C. yet D. broke