(安徽合肥质检)The police tried to get some clues from the suspect but he remained A. silent

问题补充：

(安徽合肥质检)The police tried to get some clues from the suspect，but he remained ．

A. silent

B. quiet

C. calm

D. secret

答案：

(答案→)A. silent

B. quiet

C. calm

D. secret

解析：silent沉默的，寡言的quiet安静的，轻声的；calm镇静的，平静的；secret秘密的。