Question

________ days ago, they went to the Mediterranean for a holiday．

1. A.
   A few of
2. B.
   A little of
3. C.
   A lots of
4. D.
   A couple of

Answer 1

D
A couple of表示“几个人或几件事物”，修饰可数名词，这里的a couple of days ago表示“几天前”，而选项A我们只用a few，不用“a few of”来修饰可数名词，a little修饰不可数名词，而且也没有a little of结构，a lot of相当于lots of，既可以修饰可数名词，又可以修饰不可数名词，但这里的选项C结构不对，所以选D项。