问题
选择题
The PLA soldiers came to the ruins of Yushu and after ______ seemed to be a long time, they helped some victims out.
A．which
B．that
C．what
D．when
答案
答案：C
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The PLA soldiers came to the ruins of Yushu and after ______ seemed to be a long time, they helped some victims out.
A．which
B．that
C．what
D．when
答案：C
