问题
选择题
I'm ______ the blackboard, but I can't ______ any words.[ ]
A. looking, see
B. looking at, see
C. seeing, look
D. seeing, look at
答案
答案：B
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I'm ______ the blackboard, but I can't ______ any words.[ ]
A. looking, see
B. looking at, see
C. seeing, look
D. seeing, look at
答案：B