问题
选择题
We _____ sure _____ he is innocent (无辜的). [ ]
A. are; that
B. be; /
C. /; for
D. are; what
答案
答案：A
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We _____ sure _____ he is innocent (无辜的). [ ]
A. are; that
B. be; /
C. /; for
D. are; what
答案：A