A. catastrophic B. ant C. sounding D. sister A. wheel B. expedition C. done D. commercialization A. navigation B. interrupt C. common D. prolonged A. instructions B. be from C. hover-train D. adult A. rugged B. aggressive C. tug of war D. increasing A. cushion B. NBA C. avenue D. bus stop A. prepare for B. accidentally C. magnitude D. troublesome A. sediment B. thrill C. excavation D. sauce A. ring B. geologist C. acrobatic D. archaeologist A. erode B. What does it mean C. make a mistake D. chasm