Our waste recycling project ________ a lot of investigation and paperwork had been done by the end of last term.

Some of the suspects________refused to answer and kept their mouths shut.

 The Arctic is considered _____ the northern part of the Atlantic.

—Henry doesn’t seem like the same person.—_________so much in the war has made him more thoughtful.

On ______ the flight would be delayed, we made other arrangements.