The correct conjunction is 'but'. It shows contrast.

'If' is used to indicate a condition that must be met for the action to occur.

'And' is the correct conjunction to connect two positive statements.

The subject 'pair' is singular, so the correct verb form is 'is'.

The past tense 'watched' is appropriate for an action completed last night.

The word 'Happiness' is a state of being, making it a noun.

The correct preposition is 'at'. We say someone is good at a subject.

The correct preposition is 'in'. The phrase is 'interested in'.

When two subjects are joined by 'and', the verb should be plural, hence 'are' is correct.

The word 'quickly' describes how he ran, making it an adverb.

The correct present tense form is 'runs'.

The correct past tense of 'see' is 'saw'.

To convert from passive to active voice, identify the subject performing the action. Here, 'the students' is the subject who reads 'the book'.

In active voice, the subject 'my mother' performs the action of baking the cake, thus it becomes 'My mother baked the cake.'

The correct form is 'The committee has made its decision.' 'Committee' is a collective noun and is treated as singular.

The sentence is correct. 'Data' can be treated as a singular mass noun in modern usage, hence 'is' is appropriate.

To convert to active voice, we say 'The gardener watered the flowers.' highlighting the gardener's action.

In active voice, we state that 'The players won the game.' focusing on the players as the doers.

Changing to active voice, we focus on 'the students' who completed the homework, resulting in 'The students completed the homework.'

The correct form is 'The information provided is accurate.' 'Information' is an uncountable noun and takes a singular verb.

In active voice, we highlight John as the doer, thus it becomes 'John wrote the letter.'

In active voice, we focus on the director's action, resulting in 'The famous director directed the movie.'

The active voice emphasizes the team as the doer, leading to 'The team completed the project.'

Changing to active voice, we say 'The employee submitted the report.' emphasizing the employee's action.

The active voice focuses on the doer of the action. Here, 'the choir' is the doer, so it becomes 'The choir sang the song.'

The preposition 'through' shows the place where the action occurs.

Will write indicates an action that will happen in the future.

In indirect speech, the present continuous tense changes to past continuous tense.

In indirect speech, the present continuous tense changes to past continuous tense.

In indirect speech, the present perfect tense changes to past perfect tense.