Fill in the blanks with prepositions and articles (a, an, the & zero article):
A national flag is (a) ______ matter of pride for a nation. Every independent nation in (b) ______ world has a national flag (c) ______ its own. As (d) ______ independent nation, we have a national flag. Our national flag is (e) ______ symbol of independence, (f) ______ sovereignty and prosperity. Red and green colours are used in it. The red colour used in (g) ______ flag indicates (h) ______ martyrs who laid down their valuable lives (i) ______ the independence of our country. We must uphold its (j) ______ honour.