In the United States there are, strict speaking, no national __1__ holiday, for each state must, through legislative enactment or __2__ executive proclamation, appoint the day which each holiday is __3__ celebrated. 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__ Day, Independent Day, and New Year’s Day, are uniformly set __5__ apart by all states as legal, or public holidays. In 1968, federal __6__ legislation established Columbia Day as a legal holiday for the
District of Columbia and for the federal government beginning at __7__ 1971. The law also provided begun in 1971 federal employees __8__ would be granted three-days weekends by observing Washington’s __9__ Birthday on the third Monday in February, Memorial Day on the last Monday in May, Columbus Day on the second Monday in October, and Veteran Day on the forth Monday on October. By 1971, most of the states also adopted the new dates. __10__
答案：
ct改爲strictly
day改爲holidays。因爲原句的謂語動詞爲複數are，所以holiday必須使用複數。另外no後面可以用複數也可以用單數。
h前面加上on。因爲先行詞the day在關係從句鍾做狀語，還原回去應爲：each holiday is celebrated on the day，所以必須加on。
vation改爲observance。observation意思爲“觀察，觀測”，observance則表示“遵守，慶祝”。
pendent改爲Independence。獨立日的說法是“Independence Day”。
t改爲aside。set apart 指“使分離，使分開”，語義不同，set aside表示“留出，保留”的意思。
改爲in
n改爲beginning。動詞begin和分句的主語federal employees的關係是主動的，應此要用beginning。
e-days 改爲three-day。用連字符連接起來的表示數量的.名詞的前置修飾語的複數概念仍然是單數，如：a million-pound banknote。
前面加had。如果一個句子裏面有by引導的時間狀語從句則動詞一般用完成體。
