问题
选择题
It's so noisy. I'd really appreciate ______ if you'd turn the radio down.
[ ]
A. that
B. it
C. this
D. which
答案
答案：B
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It's so noisy. I'd really appreciate ______ if you'd turn the radio down.
[ ]
A. that
B. it
C. this
D. which
答案：B