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ItwasfromMay1toOctober31,2010theWorldExpo2010Shanghaiwasheld,isagreateventfortheChinesepeople.[]A.when;thatB.that;whenC.which;whenD.that;which

题目详情
It was from May 1 to October 31, 2010 _____ the World Expo 2010 Shanghai was held, _____is a great
event for the Chinese people.
[     ]
A. when; that
B. that; when
C. which; when
D. that; which
▼优质解答
答案和解析
D