问题描述：
英语语法 现在进行时
She is standing next to the window and （asking） some questions to an important customer.和She is standing next to the window and （is asking） some questions to an important customer.有什么区别?哪一项有语法错误还是都对?
She is standing next to the window and （asking） some questions to an important customer.和She is standing next to the window and （is asking） some questions to an important customer.有什么区别?哪一项有语法错误还是都对?
问题解答：
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