"Reach" vs. "Reached": Present vs. Past Tense

Both are correct—just different tenses of the same verb:

• Reach — Present tense (also infinitive, imperative).
  Example: "I reach the office by 9 AM every day."
• Reached — Past tense and past participle.
  Example: "Yesterday, I reached the office on time."
  Perfect: "I have reached my destination."

Use "reach" for habitual actions, present facts, or future with "will." Use "reached" for completed past actions or perfect aspects. No "do reached"—that's ungrammatical.