现在进行时动词-ing形式的变化规则 — 英语选择题
题目
活动卡片上有四组动词和它们的-ing形式。哪一组的三种变化都正确？A. clean—cleaning；smile—smiling；begin—begining B. visit—visiting；take—taking；shop—shopping C. swim—swiming；use—using；open—opening D. carry—carrying；hope—hoping；plan—planing