The war made _______ impossible for the scientist to go on with his research.
| A．him | B．it | C．this | D．that |
The members of the club wouldn't run a _____ in entrusting（委托） the organization to an unreliable person.
| A．danger | B．risk | C．loose | D．chance |
It isn't quite _____ that he will be present at the meeting.
| A．sure | B．right | C．exact | D．certain |
John was very upset because he was _____ by the police with breaking the law.
| A．accused | B．arrested | C．sentenced | D．charged |
Although John was the eldest in the family, he always let his sister _____ charge of the house.
| A．take | B．hold | C．make | D．get |
This book gives a brief _____ of the history of the castle and details of the art collection in the main hall.
| A．outline | B．reference | C．article | D．outlook |