選出正確的答案:A: ________ your card while you board and get off the bus.B: Okay. I'll remember that.
(A)Swiping (B)Swipe (C)Don't swipe (D)
A 中文解釋:A: 上車即下車時要刷卡。B: 好的。我會記得。詳解:由第二句得知,第一句是要對方上下車都刷卡。叫對方做某事要用祈使句,主詞(You)省略,由原型動詞(Swipe)開頭。若使用否定(Don't swipe)則與B的回應不合。"Swiping"則為文法錯誤。