题目内容
8．-Here comes the bus!Where is our principal？-She can't go to the museum with us．She ______ some visitors around our school．（ ）
| A． | is showing | B． | shows | C． | has showed | D． | was showing |
分析 --公共汽车来了．我们的校长在哪里？--她不能和我们一起去博物馆了．她正带一些游客参观我们的学校．
解答 答案：A．根据"Here comes the bus"用的是一般现在时，可知说话的时间是现在，答语所说的事情正在"公共汽车来"这个时间发生，所以要用现在进行时，其构成：主语+am/is/are+doing．故选A．
点评 本题考查现在进行时，现在进行时是指现在正在发生的事情，掌握现在进行时的构成．
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