问题补充：
I sent a big bunch of flowers to the nurse as an of thanks for her taking good care of my grandpa in the nursing home.
A. attitude
B. impression
C. appreciation
D. expression
答案：
A. attitude
B. impression
C. appreciation
(答案→)D. expression
解析：考查名词辨析。句意：我给护士送去一大束鲜花以表谢意，感谢她在我爷爷住疗养院期间给予的悉心照顾。an expression of thanks是express ones thanks的变形。C项若能与题干构成an appreciation of her taking good care of...结构，也可当选。
