问题
选择题
About ______ of these books ______ sold out. [ ]
A. two thirds; have
B. two thirds; has
C. two third; have been
D. two third; has been
答案
答案：B
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About ______ of these books ______ sold out. [ ]
A. two thirds; have
B. two thirds; has
C. two third; have been
D. two third; has been
答案：B