填在下文横线上的四句话，最恰切的一组是（ ）他抬手看表，发现才凌晨4点。窗外临水枕河的小院悄无声息， ， ， 。 ，与世隔绝，船舱里静寂如梦。①就连自己置身其中的小楼②惟有自己的呼吸在空气中震荡着③也没有一丁点儿响动④像一条远离地球的太空船。

 , or we’ll be late for the exam and the teacher will be angry with us.

The singing group will have twoperformances ______ October.

Not everyone knows_____they want to be.

The companies are working together to createthey hope will be the best means of transport in the 21stcentury.