单项选择题
—I wonder why Mr. Brown hasn’ t showed up at the meeting yet.—I’ m not sure, but he______in a traffic jam driving here.
问答题 【B3】
单项选择题 —Good evening. I______to see Mary.—Oh, good evening. I’ m sorry, but she is not in.
单项选择题 Mary is always ready to help others when they are in trouble and she never______their requests.
