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    精英家教网 > 高中英语 > 题目详情
    —Why, my new computer is rubbish! Five hours has passed and it still hasn’t finished the downloading.
    —Don’t worry. You know, sometimes the Internet ________ be very slow.
    A．canB．mayC．shouldD．must
    A
    考察情态动词。Can考察；表示可能性。结合句意可知A正确。句意：—为什么？我的新电脑真是垃圾。四个小时过去了还是没有下载完。—别担心。你知道的，有时候网络也可能很慢。
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