There are 2 ducks in front of 2 other ducks.There are 2 ducks behind 2 othe

问题描述:

There are 2 ducks in front of 2 other ducks.There are 2 ducks behind 2 othe
naojingjizhuanwan

the question is not complete,what do you want to know?
how many duck are there?
4ducks