so we could hear the sound of running water although we couldn`t see it.为什么so和although可以放在一个句子中?

It was noisy outside用so改 we could not hear接上面 the teacher 用so 改 We will sit near the front so we can hear the speaker better.He sat in the dark so that he could not be seen there was a river in the cave so we could hear the sound of running water a()we could not always see it 8.We moved to the front row so that we could hear and see better.为什么是 we chould 不是 we can? so we could hear the sound of running water although we couldn`t see it.为什么so和although可以放在一个句子中? We moved to the front row _____ we could hear and see better哪个是对的so as 2.so that 3.because 4.s We could not hear the teacher clearly用as改 We moved to the front row___we could hear and see betterA.so as B.so that C.because D.such that we got closer to the teacher （ ）we could hear what he was sayingA.because B.in order to C.so that D.that We moved to the front row ___ we could hear and see better. The teacher spoke()so the students could hear him clearly...AloudB loudlyC aloud The teacher spoke()so the students could hear him clearly .A loudB loudlyC aloud So loudly……the students read that people could hear them out in the street. The room is so quiet that I could hear the of my heartSoundBeatSlapKnock we'll sit in the front so that we can hear the speaker more clearly. The noise was so loud that it could(hear)_from far away指点下 we listen but could hear nothing.could可以去掉吗 We were surprised that the little girl could draw so well改同义---- ------ ------the little girl could draw so well