问题补充:
As is known to all language learners, newly learnt words will soon be forgotten unless used in everyday communication.
A. exactly
B. finally
C. gradually
D. frequently
答案:
A. exactly
B. finally
C. gradually
(答案→)D. frequently
解析:考查副词。A.exactly精确地,准确地,确切地B.finally最后,终于C. Gradually逐渐地D.frequently频繁地,屡次地。句意:所有语言学习者都知道,新学的单词很快就会忘记除非在日常交流中频繁地使用。