问题
选择题
Though the professor tried his best to explain the difficult question, the students still looked _____. [ ]
A. confusing
B. being confused
C. to confuse
D. confused
答案
答案：D
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Though the professor tried his best to explain the difficult question, the students still looked _____. [ ]
A. confusing
B. being confused
C. to confuse
D. confused
答案：D