Much ______been said about the problem but nothing _______ been done so far
A.has， had
B.had， has
C.had， had
D.have, have
出自：河南师范大学-行政管理（本科）-大学英语Ⅱ
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Much ______been said about the problem but nothing _______ been done so far
A.has， had
B.had， has
C.had， had
D.have, have
出自：河南师范大学-行政管理（本科）-大学英语Ⅱ