travelling和traveling的区别是什么?说明理由

travelling和traveling的区别是什么?说明理由 travel的复数是travelling还是traveling? travel的动名词形式是traveling还是travelling travel的-ing形式是traveling还是travelling? 是travelling还是traveling?是travelled还是traveled? dream about traveling 还是dream about travelling哪个对 travelling travelling travelling travelling travel的现在进行时是traveling还是travelling,知道者请急速恢复! TRAVEL的动名词形式是什么?是TRAVELING呢,还是TRAVELLING ?是不是双写L? traveling traveling 4.Many people hold the opinion that May and October are the best time______.A.to traveling B.to travel C.of traveling D.travelling 为什么? __like _by air.A.Greens,travelling B.The Green,traveling C.The Greens ,travel D The Greens,traveling.选择什么?为什么?越明白越好! ______ like ______ by air.A.Greens,travelling B.The Green,traveling C.The Greens,travel D.T It is very difficult for a person to know how fast a car is traveling为什么是is travelling,原因!