A. assistance B. stupid C. radio D. babysit A. read a book B. railway C. in one's opinion D. conversation A. gram B. write down C. so that D. swoop A. aloud B. recognition C. focus on D. express A. production B. anticipate C. vocabulary D. first-ever A. complete B. permission C. marriage D. taxi driver A. natural B. turn down C. upset D. stone A. possible B. enterprising C. starve D. illness A. immediately B. catchy C. taikonaut D. improve A. February B. experiment C. shrewd D. suggest