Hi, there.
I have a question about " a pair of" when it is used as a subject in a sentence.
For example,
1. A pair of pieces is connected to one another.
2. A pair of pieces are connected to one another.
In the above sentences, which verb between "is" and "are" is corerct and why?
If both are right, please let me know the reason. It seems that the answer could be different depending on countries.