1.   Blair did it in that patronizing manner of a smart person instructing a class of dullards in simple but firm language.

2.   Instead of one royal son to teach, Anna will instruct a class full of his children.

3.   Later, when the military decided that social harmony was essential to a fighting force, he was one of the first assigned to instruct classes on race relations.

4.   Students with lesser-qualified or uncertified math teachers took fewer honors math classes primarily because the schools did not have teachers to instruct those classes, he said.