A. soft B. request C. assignment D. building block A. runner B. change C. member D. peaceful A. give out B. picnic C. based D. what color A. either or B. ecosystem C. rose D. certificate A. others B. spend doing C. characteristic D. crocodile A. first of all B. sense C. bedroom D. in pieces A. surface B. social C. cold D. radio A. vulnerable B. lot C. dye D. add up A. go for a walk B. midnight C. dubious D. quiet A. hard B. defend C. lead D. ventilate