A. ruin B. sanitation C. adapt to D. grade A. scornfully B. mutton C. condition D. period A. organized B. char C. conflict D. vicinity A. unfortunately B. latch C. babysit D. intelligent A. review B. know C. challenging D. formal A. ping-pong B. headmistress C. prompt D. gatekeeper A. I'd love to B. stay in touch with C. put out D. wave A. gymnastics B. brush C. relaxed D. lucky money A. London B. ad C. thought D. fall asleep A. constantly B. arbitrary C. topic D. frame