choose the correct verb in the parenthesis that best completes the sentence underline the correct verb
21. They (will have written,have written)a letter by tomorrow.
22. He (Has finished,have finished) his module.
23My teacher (has forgotten,will have forgotten) his laptop at home.
24.My grandparents (has lived,have lived) here all their lives.
25.I (has never been,have never been) to south korea.​