Choose the correct order of the prepositions from the options given to fill in the blanks of the following passage :
_______ first, we sat _______ the shade _____ a tree, but later we went ________ a swim ________ the river.
Answer : C. Why was such a letter written by your brother?
Read the passage and answer the question that follows:
The chief characteristics of heroism is persistency. A true hero is never wavering in his intentions, but is always firm and fearless. The word 'persistency' means :