'Are' used when we are going to ask about any group or any plural object. whereas 'Is' used for singular purpose.

I want to thank my worthy teachers. They show me a right way. Even I don't have word for my teacher who r more than everything.

yes

Cool dude....

The first valuable thing that I learned from a person in my life is from my teacher. Coz my math teacher he is my role model too.As he really show me the golden way of life. Neither friends nor relatives taught me a single lesson of life. #respect teacher#

Yes, diamond is one of the hardest substance.

Yes u r right pta nhi kon h mere bhi sare right answers ko downvotes mil rhe h vo bhi ek sath.

NINE, of course.

Quote means good thoughts like :- 1. Goal is nothing but godly order against laziness. 2. Difficult roads are often leads to the beautiful destination.

hi.....hello.... wassup..