问两道高二英语句型转换
He was punished by his teacher,because he did not finish his homework.
_______ ____ his homework,he was punished by his teacher.
walk straight down this road, and you will see the post office on your left.
___ ___ ___ this road, you will see the post office on your left.
这里少了一个and,又要怎么改.
谢谢
U2,三,22,23