A. biology B. collect picture cards C. exhausted D. carefully A. far B. frown C. theater D. remark A. delta B. class C. make up D. clean the door A. backward B. worst C. that's all D. rat A. example B. scrapbook C. punish D. shelf A. pat B. factory C. talent D. directory A. worse B. accessible C. pester D. convoy A. the day after tomorrow B. homeroom C. crowded D. verb A. odd B. so far C. reflect D. flies A. oriental B. kilometer C. pretty D. photograph