E-mail is very popular today.  People seldom write letters now,_______?

I hear the tall girl wearing glasses is your new classmate. She’s from America, _____ ?

She’s never spent much money on her own clothes, ______ she?

— You have never seen the dinosaur eggs, have you?—________. How I wish to visit the Dinosaur World.

—The little boy didn’t have breakfast this morning, ________?—Yes, because he had no money with him.