– You look very tired this morning. What did you do last afternoon? I did Christmas sh

– You look very tired this morning. What did you do last afternoon?
-- I did Christmas shopping.
A. a number of
B. a few of
C. a lot of
D. a piece of

A. a number ofB. a few of(答案→)C. a lot ofD. a piece of解析：试题分析: 句意：今天上午你看上去很累，昨天下午你做什么了？我圣诞购物了很多。a number of 许多（修饰可数名词），a few of……中的几个（可数名词），a lot of许多（修饰可数或不可数名词）， a piece of一片；Christmas shopping.圣诞购物，不可数名词，故选C.

谢谢了