Which past tense is used for repeated or habitual actions?

Ayer...is used for which tense?

Siempre...is used for which tense?

Todos los días......is used for which tense?

Anoche...is used for which tense?

Muchas veces......is used for which tense?

If you were to write or say the following sentence in Spanish, would you need to use the preterite or imperfect? (Consider the uses of each tense.)

I always ate dinner at 5:00 when I was a kid.

If you were to write or say the following sentence in Spanish, would you need to use the preterite or imperfect? (Consider the uses of each tense.)

Everyone woke up late this morning.

If you were to write or say the following sentence in Spanish, would you need to use the preterite or imperfect? (Consider the uses of each tense.)

I called you twice the day before yesterday.

If you were to write or say the following sentence in Spanish, would you need to use the preterite or imperfect? (Consider the uses of each tense.)

When I was six years old, I was really shy.

PRETERITE or IMPERFECT?: We went to the pool yesterday.

PRETERITE or IMPERFECT?: I used to eat 6 bags of gummy bears every week.

Yo tenía mucho juguetes cuando era niña. (tener = to have)

My amiga Maria nació en Guatemala. (nacer = to be born)

Yo viajé a Puerto Rico el año pasado. (viajar = to travel)

Ellos leyeron ese libro para inglés la semana pasada. (leer = to read)

Luis vivía en un apartamento cuando era niña. (vivir = to live)

Cuando era un bebé, yo dormía mucho. (dormir = to sleep)

Which past tense is used to express what one "used to do"?