The’ article will be used because a specific train ‘Chetak express’ is talked about.

No article is used before plural countable nouns used in a general sense. ‘Bears’ is a plural countable noun and is used in a general sense here.

Here, the sentence talks about the ‘movie’ as general class of things. Since we are referring to general things, we need to use the indefinite article ‘a’.

Option C is correct as ‘The’ is used with words with superlatives. ‘Most’ is superlative.

‘A’ and ‘An’ are indefinite articles and ‘the’ is the only definite article in the English language. ‘The’ is used with reference to something specific such as a specific person or place. This sentence does not talk about a specific honourable man, hence ‘the’ will not be used.
‘A’ cannot be used with honourable because it begins with a vowel sound. By rules of grammar, ‘an’ is used before a word that begin with vowels or vowel sounds. The word honourable begins with a vowel sound (o) because H is silent, similar to the pronunciation of ‘hour.’ Hence, Option B ‘an’ is correct.

The word “very” is irrelevant. “good job” takes a determiner, in this case “a”.

The first blank won’t take any article as milk is an uncountable noun and is talked about generally. The second blank shall take ‘the’ as the speaker is directing the attention of the listener to a particular glass which has milk kept in it.