填入下面一段文字横线处的语句，最恰当的一句是（ ）对于每个学生来说，在进行升学规划时， 也是促进学校办出高质量的动力所在。

We can communicate some important news others __________ E-mail.

twice a year, whether it is a car ora bus or a truck, is the rule that every driver must obey in this city.

MrGreen stood up in defense of the 16-year-old boy, saying that he was not the one_______

Much to our disappointment，the houses________to us were all destroyed in the big earthquake.[ ]