-By plane is faster than by train. -But by train is ____ . A: slowe B: cleane C: quiete D: safe
-By plane is faster than by train. -But by train is ____ . A: slowe B: cleane C: quiete D: safe
下面采用“附加”语法手段的有（） A: work→worke B: work→working C: work→worked D: happy→unhappy E: slow→slowe
下面采用“附加”语法手段的有（） A: work→worke B: work→working C: work→worked D: happy→unhappy E: slow→slowe
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