20个o开头的单词答:off, oil, old, one, out, own, our, okay, once, open, ocean, opera, onion, often, olive, offer, or, other, ought, office, online, orange
o开头的英文单词答:open,OK,on,oaf,old,oafish,oak,oaken,o'clock,office,Oakley,oh,of,only,ocean,Olympic,one,other,once,off...