请教：2016英语专八改错练习题十六第7小题如何解答？

In the United States there are, strict speaking, no national __1__holiday

By 1971, most of the states also adopted the new dates. __10__

appoint the day which each holiday is __3__celebrated.

for each state must, through legislative enactment or __2__executive proclamation

The law also provided begun in 1971 federal employees __8__would be granted three-days weekends by observing

Independent Day, and New Year’s Day, are uniformly set __5__apart by all states as legal, or public holidays.

Congress and the president may establish legal holidays for the District of Columbia and for federal employees throughout the states and territories; and by long custom, days that receive nationwide observation, such as Christmas, Thanksgiving, Labor __4__

__7__language and logic, or language and culture。

Therefore, various religious groups celebrate the __7__

he kids over everything having to do with the school. __7__