A. cascade B. fun C. admirable D. squadron A. student B. blessing C. adding machine D. sadly A. laser B. wham C. Jones D. crayon holder A. beaten track B. generalize C. take part D. office A. classmate B. take a shower C. try out D. teeth A. borrow B. black-and-white C. beauty D. OK A. shrug B. tidy the desk C. show D. be hard on A. unrelenting B. e-friend C. thing D. handkerchief A. abandoned B. dumpling C. excuse D. conversation A. have in common B. build C. popular D. list