A. domesticate B. put C. suppose D. twelve A. older B. twenty-one C. sterilize D. song A. modest B. hear of C. eighty D. sewage A. long B. thirty C. purity D. national A. at home B. twenty-six C. hydro-electric D. slogan A. pick up B. weightlessly C. come up with D. ninety A. old B. anticipate C. pencil D. I'm A. telegraph B. Merry Christmas C. eleven D. tidy the desk A. book B. thermodynamics C. workday D. the Arctic A. sire B. stare at C. twenty-four D. mixed