Water，which seems so simple and common，is________makes life possible.

—You know，I’m poor in Chinese，you are not good at English，and...

—That’s________we should help each other.

_______hungry I am，I never seem to be able to finish off this loaf of bread.

The magnificent tower must be saved，________the cost!

 ________wants to stay in a hotel has to pay their own way.

 The how­to book can be of help to________wants to do the job.

A cook will be immediately fired if he is found ________ in the kitchen.

He found his son________by letters and papers and________very worried.

 ________you may have，you should gather your courage to face the challenge.

There were some chairs left over________everyone had sat down.