A. at last B. mother C. riverbank D. sir A. fond B. drop C. may D. screw A. let B. die C. front D. registration A. thirteen B. examiner C. climbing D. eat A. questionnaire B. pedal C. finger D. juice A. conscience B. be C. helpless D. but A. playground B. kind C. after-class D. a bit A. by chance B. existence C. out D. all-time A. for B. schoolbag C. experience D. U-turn A. crowd B. dinner C. pill D. gratitude