问题描述：
so faint ___that no one thought...
1 the noise was 2 had been the noise 3 it was the noise
4 it had been the noise
选择哪一个,及为什么
1 the noise was 2 had been the noise 3 it was the noise
4 it had been the noise
选择哪一个,及为什么
问题解答：
我来补答展开全文阅读