单选题 Mr. Smith said that he would be punctual for the appointment, ______ he were late?
【正确答案】 A
【答案解析】本题为语法结构题。“what if”常引导一个句子表示虚拟的情况,意为“要是……怎么办”。本句大意为:史密斯先生说他将准时到会,但要是他迟到了怎么办?