Spanish people usually speak ___

Spanish people usually speak ______ than English people.
A、quicklier
B、more quicklier
C、more quickly
D、quicker
【正确答案】：C
【题目解析】：句中有than表明是比较级。排除选项A和D。副词修饰动词，排除选项B。选项C是正确的。