$1$. Tipping is not a custom in Vietnam, so you don't have to tip if you don't want to do.
$2$. In Brazil, the standard tip in restaurants is 10 percent
$3$. The Xoe dance is performed by the boys and girls in the hamlets
$4$. We have to take off our shoes when we go inside a pagoda
$5$. Nowadays teenagers rely more on technology than they did in the past.
$6$. Life in the countryside has changed a lot in the last ten years