改错：1.They will arrive the town in half an hour.
问题描述：
改错：1.They will arrive the town in half an hour.
2.How careful he is writing
3.He was sleeping while I saw him.
4.I am better in reading than listening
答
They will arrive in the town in half an hour.
How carefully he is writing!
He was sleeping while I was looking at him./ He was sleeping when I saw him.
I am better at reading than listening.(be good at)