问题
选择题
Sorry, I don't know the answer ______ the question ______ it is too hard. [ ]
A. to, because
B. too, or
C. of, because
D. to, so
答案
答案:A
Sorry, I don't know the answer ______ the question ______ it is too hard. [ ]
A. to, because
B. too, or
C. of, because
D. to, so
答案:A