1
![English Language Learners](//cdn.sstatic.net/Sites/ell/img/apple-touch-icon.png)
Usually "each" is used to refer to every member in the group, so it is followed by a singular verb like:
Each student and teacher knows that exams are.....
Each of the buildings is surrounded by high metal fencing.
Now I am not sure how the first sentence in the following examples is ...