My father has given up smoking since he ______on.
| A．will operate | B．will be operated | C．operated | D．was operated |
They are ___ little children that we all like them.
| A．so | B．such | C．very | D．quite |
It has been announced that passengers ____ remain in their seats until the dangerous subjects have been removed.
| A．can | B．will | C．may | D．shall |
His careless driving ___ him his life last year.
| A．spent | B．paid | C．took | D．cost. |
Having ended the major combat (主战), President Bush_____ rebuilding Iraq.
| A．started out | B．went all out | C．turned to | D．went on |
_____ private cars are bringing us convenience, they may also cause more traffic accidents and pollution.
| A．While | B．As | C．If | D．Since |