填入下面一段文字横线处的语句，最恰当的一句是倏忽间，林木疏朗处突然闪过一泓澄澈，溪床细沙乱石，纤尘不染，水底的树叶纹脉，清晰可辨，那汩汩的水声好像响在别处。风过树林，树叶哗哗作响，茂密的枝叶丛里又显出一汪清泉，     ，奔突的水声也愈发大了。

________ do you stay at home at weekends— Ten hours.

I can’t believe my eyes.The town has changed ________．—That’s right.The people here are always working hard.

May I use your computer today- ______.

You can hardly imagine what great trouble we had thework