Question

use articles
------------- ganga is ------------- sacred river of --- hindus . it rises from --------------------- Himalyan glacier

Answer 1

hi buddy,
(No article) Ganga is (a) sacred river of (the) hindus. It rises from (a) Himalayan glacier. 

hope this helps :)

Answer 2

The Ganga is a sacred river of the Hindus. It rises from the Himalayan glacier.

Common Articles:

1. The-

• The is used before the names of rivers, mountains, and other proper nouns, which are specified or are well-known.

2. A/An-

• When the noun is not specified, a or an is used.
• 'A' is used before a word beginning with a consonant sound while 'an' is used before a word beginning with a vowel sound.

In the given sentence,

• Ganga, Hindus, Himalayan glacier are specific nouns, which are well-known.
• 'River' is a common noun, and which river is not specified here. 'River' starts with a consonant sound, hence article 'a' is used,