Помогите 1. Do we use plurals when there is only one thing? *yes*no* 2. Do we use...

Question

Помогите
1. Do we use plurals when there is only one thing? *yes*no*
2. Do we use plurals When we think of things as a group? *yes*no*both*

Answer 1

1) Do like. 2) Do we use not.