－Can you go to school in other clothes?－No. We _______ to go into the school unless we are in school uniforms.

These days students in some schools ______ not to use mobile phones. 

—It’s difficult for the village children to cross the river to get to school. We think a bridge_______over the river.

—Look at the sign on the right. —Oh, parking ______ here.

The number of children who have lost parents to AIDS ___ to rise to over 26 million in 2011.