题干

As is known to all language learners, the newly learnt words will soon be forgotten unless ______ used in everyday communication.
A.graduallyB.selflesslyC.fluentlyD.frequently
上一题 下一题 0.85难度 单项选择 更新时间:2012-05-24 09:45:03

答案(点此获取答案解析)