Climbed the mountain every day
.
(note: everyday is not correctly used in the question).
"Everyday" is an adjective and so doesn't have a past tense.
The past tense is summited a mountain.
Pastcalled
Went is the past tense of go. present - I go to school everyday past - We went to school today
The sentence is in past tense.
eat is present tense. We eat rice everyday Ate is past tense. We ate rice yesterday
You read a book everyday. This sentence is the same in past tense or present tense, because the past form of read is spelt the same - read - but it is pronounced red. To make certain the reader understands it is a past sentence you could add a time phrase eg You read a book everyday last week.
"I go to the shops everyday" present"I went to the shops" past
Our is a possessive determiner - not a verb- it can be used in past or present sentences. It is not past or present .They saw our dog on the road.They see our mother everyday.
Tom went to see his mother everyday.
She swept her room everyday
Buy IS present tense. The past tense is bought.