... along the border between the United States and Canada, Niagara Falls actually consists of two falls, the American Falls and the Horseshoe Falls. The former is on the US side of the border, in the ... or D (2, 5 points) The table tennis match was very enjoyable before (1)_____ lit a cigarette and ruined the evening. After (2) _____ smoking, they let the cigarette fall on the wooden floor. Unfortunately, ... found B. if I had found .C. whether I have found D. whether I foundIII. Choose the underlined part (A, B, C or D) that is incorrect. (2, 5 points)1 He invited me to having dinner with him and...