Marie’s never been to Tibet, ____she? 

It is now 11:30 pm, so there are few people and buses on the street, ____________ ?

Ann has a new Iphone 4s, ______?

People have cut down many trees every year, so there will be fewer trees, ________?

—Lucy hardly goes back to see her parents, _____________?—__________. Instead, she chooses to write to them.