问题
选择题
-When did his parents pass away?
-It was on April 14th________the earthquake hit Yushu County.[ ]
A．what
B．that
C．which
D．when
答案
答案：D
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-When did his parents pass away?
-It was on April 14th________the earthquake hit Yushu County.[ ]
A．what
B．that
C．which
D．when
答案：D