Revising sentences for agreement.

Question

There is either an error in subject-verb agreement or an error in pronoun-antecedent agreement

1. Two dollars were once considered generous pay for an hour's work. My answer: Two dollars was once considered generous pay for and hour's work.

2. All of the travelers were surprised when he or she saw the old purple-and-yellow bus. My answer: All the travelers were surprised when they saw the old purple-and-yellow bus.

3. An international team of archaeological researchers is assembling, one by one, at the site of exciting discovery. My answer: An international team of archaeological researchers are assembling, one by one, at the site of exciting discovery.

4. Do Cindy and Brenda practice her dance routine here every day? My answer: Did Cindy and Brenda practice her dance routine here every day?

5. The two performers has become one of the most popular teams in the history of comedy. My answer: The two performers have become one of the most popular teams in the history of comedy.

Answer 1

4. No.

The others are right.

Answer 2

4. Does Cindy and Brenda practice there dance routine here every day.

Answer 3

Still not right.

Cindy and Brenda are the subjects.

Hint: also pay attention to spelling.

Answer 4

Does Cindy and Brenda practice their dance routine here every day?

Answer 5

DO Cindy and Brenda . . .

With that correction, your sentences are right.