Wrong. She drills us on a lesson until she is sure the class are familiar with everything in each assignment.

Right. She drills us on a lesson until she is sure the class is familiar with everything in each assignment.

Wrong. Sometimes when some member of the class makes a mistake in his speech, the rest of the class laugh and talk about it.

Right. Sometimes when some member of the class makes a mistake in his speech, the rest of the class laughs and talks about it.

Revise. Another committee, known as the advisory committee, is composed of one member from each district, and are chosen by the board of the district bank represented.

318. Make the verb agree with its subject. An intervening noun must not attract the verb into a different form.

Wrong. The number of bearings in a car vary.

Right. The number of bearings in a car varies.

Wrong. The grounds upon which the building stands consists of half a city block.