题目内容：

8.－You looked very tired this morning.What did you do yesterday afternoon?
－I did ___ Christmas shopping.
A.a lot of B.a few of C.a number of D.a piece of
想问问这四个词怎么区别,

优质解答

A a lot of =some
b a few 没有 a few of 的词组
C a number of 相当于 many,修饰可数名词复数
D a piece of 一片 一张