Do you use were or was when using two singular subjects?

You would use were when using two singular subjects joined by and.

Here's why:

* Subject-verb agreement dictates that the verb must agree with the subject in number (singular or plural).

* When two singular subjects are joined by and, they are considered a plural subject.

Example:

* The cat and the dog were playing in the yard. (Cat and dog are both singular, but joined by "and" make a plural subject, so "were" is the correct verb.)

Let me know if you have any more questions!