Arn't I? is the correct answer. Hence the sentence is positive, tag should be negative. am+n't is aren't( not amn't)

Shall+n't is shan't.

Sentense is negative. So tag should positive(no need of 'not'). 'They' should be used to denote the students inorder to avoid repetation.

The sentence is in simple past tense(no auxiliary verb, verb is in v2 form). So we should add 'did' as the a/v.

The article an should be used before wovel sound

The sentence is negative(rarely means no).So tag should be positive.No a/v. Subject is plural. Then 'Do'

'the'  should be used before  superlative form of words.

European start with a wovel, but not wovel sound(Yu).

Article 'the' is used before natural phenomenons.

We use 'It' in place of subject if the subject is not human beings.

A strong decision, but an action in future. So 'will'

'than' denotes comparative degree. So more/er form.

After 'the' there will be superlative degree.

'as...as' denotes equal position ie, positive degree

politics is singular. are is wrong. 'is' correct.

'is' should be replaced by 'are'. as well as- singular verb.

'people' is the correct usage

He-subject /is-auxiliary verb(a/v) / eating-verb/an apple-object

When active voice change to passive voice,

1. The place of subject and object interchanged. Subject turned to a third party. 'by' add before it. An apple ................................ by him
2. If the verb is v1+ing, change it as 'being +  v3 '

Simple present tense. Subject singular. v1+s/es. 'sings' is correct.

'to your friends' is correct. The word 'inferior' is not a comparative form.

with - together for- a particular time

'is working' is correct. 'each' and 'every' are followed by a singular verb.

indicates a long term from past till now.