When questioned, he was too shocked to give a（n）      of what had happened when the attack took place．

The millionaire passed away, leaving his children with a large ______.

—I hear that you will be on travel again.—Yeah. My boss __________ for me to discuss business details with someone from another company.

(2013·湖北高考)According to the law, all foreigners have to ________ with the local police within two weeks of arrival.

 We drew this conclusion on the _______of research and experiments.