Choose the underlined part A, B, C or D that needs correcting
Find the mistake: When I walk past the park, I saw some children play football.
Correct answer: A
Edit: walk => was walking
Structure: S + V (past continuous), S + V (past simple)
=> used to describe an action that is happening when another action is interrupted
Translated: When I was ingang through the park, I saw the children playing ball