it happens that

(有时、往往)会发生；碰巧，恰巧

isn't, ISO, isobar, isolate, isolated, isolation, isolation hospital, isolation ward, isolationism, isolationist, isometric, isomorph, isomorphic, isosceles, isotherm, isotope, issue, issue from, isthmus, it, It goes without saying that, it is likely that, it is no use doing..., it is time to do, it never entered one's mind, it seems that, it'd, it'll, it's, it's up to sb. (to do), ita, Italian, Italianate, italic, italicize, italicise, italics, Italo-, Italy, itch, itching, itchy,