The largest and smallest states of the United States are ________.

The government finally ________ all the documents relating to the war.

Agricltural changes in the late 18th and early 19th centuries in England were so great that they were worthy of the term “ ________ ”.

During the 1990s many Australians called for their nation to become a republic with ________.

The professor worked for 7 hours at a ________. 

The Indo-European language family is made up of the languages of the following EXCEPT ______ .

Although Tom is satisfied with his academic achievement，he wonders _______ will happen to his family life .

Unlike his contemporaries in the early 20th century,( )did not break up with the poetic tradition nor made any experiment on form.

It is vital that the work _______ in time.

The longest river in Canada is ________.