81.tract, trail, 含義是拖拉，吸引
attract, tractor, abstract, contract（收縮）
82.tribut, 含義是給予
contribution, distribute
83.us, ut, 含義是用，使用
usable, utilize, abuse
84.vac, van, 含義是空，虛
vacancy, vanity, evacuate（清空）
85.vad, vas, wad, 含義是走，去
invade, wade, evade（逃避）
86.vers, vert, 含義是旋轉(zhuǎn)，反轉(zhuǎn)
convert, inversion（倒轉(zhuǎn)）, reverse, divert（使轉(zhuǎn)向）
87.vid, vis, vey, view, 含義是觀看，看見
television, visible, evident, interview, survey
88.viv, vit, 含義是生，活
vivid, vital, survival，
89.war, ward, 含義是注意，保護
aware, wary（謹慎）, ward（守護）
90.way, 含義是路
way, away, subway, always
attract, tractor, abstract, contract（收縮）
82.tribut, 含義是給予
contribution, distribute
83.us, ut, 含義是用，使用
usable, utilize, abuse
84.vac, van, 含義是空，虛
vacancy, vanity, evacuate（清空）
85.vad, vas, wad, 含義是走，去
invade, wade, evade（逃避）
86.vers, vert, 含義是旋轉(zhuǎn)，反轉(zhuǎn)
convert, inversion（倒轉(zhuǎn)）, reverse, divert（使轉(zhuǎn)向）
87.vid, vis, vey, view, 含義是觀看，看見
television, visible, evident, interview, survey
88.viv, vit, 含義是生，活
vivid, vital, survival，
89.war, ward, 含義是注意，保護
aware, wary（謹慎）, ward（守護）
90.way, 含義是路
way, away, subway, always