单项选择题
（）from his accent (口音), he must be （）Americ
A. Judged, from B. To judge, of C. Judging, from D. Judging, of
填空题 A．breath B．paths C．mouth D．anything
填空题 A．clear B．learn C．research D．heard
填空题 A．expert B．exercises C．excellent D．exit
