Question

What do the verbs fit, set, and read have in common? A. Each one requires the addition of a helping verb. B. They keep the same form no matter what tense is used. C. They are all considered regular verbs. D. They are pronounced differently depending on their use.

Answer 1

I think the answer is B.

Example: Can you please set the table? (present tense)
                 She set the table yesterday. (past tense)
                 
                 Can you read this book? (present)
                  She read yesterday. (past)

There are no suffixes added.