its reported that china will not buy the european debt until some research ___.its reported that china will not buy the european debt until some research ___.A.will be done .B.has been done.C. had been done D.will have been done求解啊 顺便说
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its reported that china will not buy the european debt until some research ___.its reported that china will not buy the european debt until some research ___.A.will be done .B.has been done.C. had been done D.will have been done求解啊 顺便说
its reported that china will not buy the european debt until some research ___.
its reported that china will not buy the european debt until some research ___.
A.will be done .B.has been done.C. had been done D.will have been done求解啊 顺便说原因
its reported that china will not buy the european debt until some research ___.its reported that china will not buy the european debt until some research ___.A.will be done .B.has been done.C. had been done D.will have been done求解啊 顺便说
B
用现在完成时代替将来完成时, 因为这是until 引导的时间状语从句, 不可用将来时 , 主将从现
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D