when i was on my way home,i saw a thief steal a purse from a girl_______(secret)

问题描述:

when i was on my way home,i saw a thief steal a purse from a girl_______(secret)
用所给单词的正确行使填空

secretly
此处用作副词是用来修饰steal
secretly意为秘密地,偷偷地
secret意为秘密,如果直接填secret,显然句意不通