Mark the letter A, B, C, or D to indicate the underlined part that nee

Mark the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.

 

The park keeper told us not walk on the grass or we would be fined.

• A. A. Keeper
• B. B. not walk
• C. C. the grass
• D. D. would be