词语变化为什么thin——thinned,wait——waited,limit——limiting,kid——kiddi

词语变化为什么thin——thinned,wait——waited,limit——limiting,kid——kiddi You are ——(kid) —Haven't you seen the speed limit sign?please drive Most of the ——（kid） are very lovely 适当形式 动词变化permit的过去式为permitted,wait的过去式为什么是waited,为什么不双写t? A little kid shows how to look forward to life—with delight. wait的过去式为什么是waited —Who is the kid?—I don,t know.He does,t [ ] A.take after any I left my friend ——（wait）there Young man,you should wait ___ line.—— Sorry. Mary waited here (for three hours).对括号内提问 ————— ————— ————— —What's the girl like?—On,she is very thin.