问题
选择题
．Was it ______ Expo 2010 that made Shanghai the focus of the world then?
A．hosted
B．to be hosted
C．hosting
D．having hosted
答案
答案：C
考察非谓语动词.句意:是举办2010世博会让上海在那时成为了世界的焦点吗?动名词作主语表示抽象的动作,故选C.
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