Question

when I was young I dash run fast fill model​

Answer 1

Answer:

used to

is the answer for this my dear mate

Answer 2

When I was young I used to run fast.

MODAL VERB:

Modal verbs are auxiliary verbs (also called helping verbs) like can, will, could, shall, must, would, might, and should. After a modal verb, the root form of a verb is generally used. The word to should not appear after a modal verb. An exception is the phrase ought to, which is considered a modal verb.

Brainliest please