Question

Tim kiss/kisses his mother before going to school.

Answer 1

Tim kisses his mother before going to school/ - Present Simple

Answer 2

Both "kiss" and "kisses" can be correct, depending on the context and the subject of the sentence.

1. "Tim kisses his mother before going to school." - In this sentence, "kisses" is used if Tim is a singular third-person subject (he) and is referring to a habitual action.

2. "Tim kiss his mother before going to school." - In this sentence, "kiss" is used if Tim is not the subject, or if it's a command or suggestion to someone else, for example, "Tim, kiss your mother before going to school."

The choice between "kiss" and "kisses" depends on the specific context and the intended meaning of the sentence.