—You didn’t wait for Mr. Smith last night, did you?—No, but we ______. He didn’t return home at all.
They are ___ little children that we all like them.
It has been announced that passengers ____ remain in their seats until the dangerous subjects have been removed.
His careless driving ___ him his life last year.
Having ended the major combat (主战), President Bush_____ rebuilding Iraq.
_____ private cars are bringing us convenience, they may also cause more traffic accidents and pollution.