Capital Community College Foundation
Guide to Grammar and Writing: Subject Verb Agreement
This site has a ten question quiz which provides a way to print results with a name and course. Explanations are provided for incorrect answers. Based on material by Evelyn Farbman and Houghton Mifflin, used by permission.
BBC
Bbc: Skillswise: Verb Subject Agreement
How can you make sure you get the right verb form? Use this BBC Skillswise factsheet, worksheet, and quiz to learn more about subject-verb agreement.