Grammar

Here 'fast' is taken as an activity of keeping away from the food. Hence, it's a verb.

'Right' or 'wrong' are nouns.

This is the correct answer as ‘allude’ indicates casual reference without a lengthy discussion. This is the correct option in this context.

tense with  something

It is in present continuous tense as is/am/are + v1 + ing has been used here.

Past of past is reffered to in the sentence and had + v₃ has been used. Hence, option 3 is the correct answer.

The sentence is in the past continuous as was + V1 + ing has been used here.

The given sentence is in the future perfect tense. The format of future perfect tense is 'Subject + will have/shall have + V3'. Option 4 is the correct answer.

Jab is primarily used as a verb meaning to poke, thrust, or punch something or someone. While it can be a noun in some contexts (like a jab in boxing), as a standalone word it is most commonly an action word.

It is a common noun. A common noun is the word used for a class of person, place or thing. In this case it used for a class of animals..

Jaggary (or jaggery) is a noun referring to a traditional unrefined sugar made from sugarcane or palm sap. It names a substance, not an action or quality.

Jack is a proper noun when used as a name for a person. It can also be a common noun in various contexts (a tool for lifting, a playing card, a socket), but it never functions as a conjunction, pronoun, adverb, or preposition.

Jangle is a verb meaning to make a harsh metallic sound or to cause something to make such a sound. It describes an action of creating discordant ringing noises.

Jabber is a verb meaning to talk rapidly and indistinctly, or to utter words in a rapid or confused way. It describes the action of speaking incoherently or excessively.

Janitor is a noun referring to a person employed to take care of a large building, such as a school or office block. It names a profession or role, not an action or quality.