no national holiday, for each state must, through legislative enactment or executive proclamation, __2__
appoint the day which each holiday is celebrated. Congress and the president may establish legal holidays__3__
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, __4__
Labor Day, Independent Day, and New Year’s Day, are uniformly set __5__
apart by all states as legal, or public holidays. In 1968, federal legislation established Columbia Day __6__
as a legal holiday for the District of Columbia and for the federal government beginning at 1971. __7__
The law also provided begun in 1971 federal employees would be granted__8__
three-days weekends by observing Washington’s Birthday on the third Monday in February, __9__
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__
參考答案：
1.strict改為strictly
2.holiday改為holidays。因為原句的謂語動詞為復數(shù)are，所以holiday必須使用復數(shù)。另外no后面可以用復數(shù)也可以用單數(shù)。
3.which前面加上on。因為先行詞the day在關系從句鐘做狀語，還原回去應為：each holiday is celebrated on the day，所以必須加on。
4.obsevation改為observance。observation意思為“觀察，觀測”，observance則表示“遵守，慶�！�。
5.Independent改為Independence。獨立日的說法是“Independence Day”。
6.apart改為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。
7.at改為in
8.begun改為beginning。動詞begin和分句的主語federal employees的關系是主動的，應此要用beginning。
9.three-days 改為three-day。用連字符連接起來的表示數(shù)量的名詞的前置修飾語的復數(shù)概念仍然是單數(shù)，如：a million-pound banknote。
10.also前面加had。如果一個句子里面有by引導的時間狀語從句則動詞一般用完成體。
