下列哪一项属于串件原则

The boy was the only one that ________ the car accident; both his parents went killed.

To everyone＇s disappointment, nobody ________ in the air crash.

He won＇t ________ his interest in collecting book cards too long because he is always changing his mind.

He usually ________ from the MRT to the 252 bus to his office.

After crying for two hours, Jenny＇s eyes were really ________.

A white flag ________ surrender.

It took him two years to _______ from the operation.

Living constantly under stress is not good for your health, so you had better sometimes take your mind off your work and _______ .

Please listen to me carefully. I won＇t ______ what I say again.

The police left no stones unturned to ________ for the missing boy.