Present tense and past tense(5points!!!)

brushes
(present tense 講明習慣)
第三身單數 + s/es
ch sh x o z + es

brushes

use present tense for repeat action.

The key word of this sentence is "everyday"

He brushes teeth everyday

brushes because everyday is a magic word for present tense. and he she it should add s or es or ies on verb. brush is a verb so we should put brushes.

He brushes teeth everyday
the answer is presnt tense , because this is behavior is the habit.