__ we admit that there arestill some problems about the system of modern education,we don’t mean that it is of no use

Nobody knows why the boy can tell what’swritten on the paper in another room without looking at it It really _______ explanation

The Mekong River, which________ severalcountries in Southeast Asia, ______to be playing a significant role in the region.

My uncle is engineer and my aunt is cook.

________ is a very popular sport in summer.