A. cycling B. clear C. stuffy D. on the phone A. assistant B. harmful C. whimsical D. hybrid A. watermelon B. terrorist C. make sure D. sometimes A. enlightened B. stairs C. tablet D. tornado A. speculation B. compensate C. culture D. brave A. broken B. toss C. hot D. abacus A. radioactive B. pear C. in advance D. wrong A. skilful B. imagine C. thirteen D. banish A. under B. requisite C. riddle D. triangle A. at an end B. dancer C. first aid D. rich