Sentence Completion (Tenses)

 This is the case of simple future tense 

 This is the case of present continous tense.

This is a third conditional sentence expressing a hypothetical past situation. The structure is: If + past perfect, ... would have + past participle. The if-clause uses 'had met' (past perfect) because it refers to a past condition that did not happen. The main clause already uses 'would have helped', so the if-clause must match with past perfect.

The sentence requires the present perfect continuous tense because it describes an action that started in the past (June 1997) and continues to the present. 'Had been attending' is the correct form. The subject 'She' requires the auxiliary verb 'had' (not has). The structure is: had been + present participle (attending). Since June 1997 indicates the action began in the past and continues.

The sentence has two past actions: 'had completed' (past perfect) and the blank. Past perfect is used for the earlier action, and simple past is used for the later action. Since completing the work happened before the father came, 'had completed' is already correct for the first action. The father's action came after, so it uses simple past 'came'.

 The antecedent in time of simple past 'he arrived' is past perfect 'had wriiten'.

 This is the case of simple present tense.

The phrase 'as though' introduces a hypothetical or contrary-to-fact situation, which requires the subjunctive mood. For statements that are clearly contrary to reality (like someone being angry when they're not), we use 'were' instead of 'was'. This is the subjunctive form of 'to be' used in hypothetical situations after 'as though' or 'as if'.

 "Just now" denotes present tense , so 1 is correct

 This is the case of past tense.

 This is the case of past tense

 Since this is the case of past tense , Hence 3 is correct

This is a first conditional sentence describing a real possibility in the present/future. The structure is: If + present simple, ... will + base verb. 'If he is honest' uses present simple, so the result clause uses 'will prosper' (will + base verb). First conditionals express likely or possible future results based on present conditions.

 "Last night" denotes past tesne. Hence, "had" is correct

Case of past tense, hence 1 is correct

This is a first conditional sentence expressing a real possibility. When the if-clause uses present tense (or any form implying a real condition), the result clause uses 'will'. Here, 'You will succeed' is the result, so the if-clause should use present simple 'work' (not 'worked' or 'had worked'). First conditionals follow the pattern: If + present simple, ... will + base verb.

 This is the case of past tense , hence 2 is correct.

 Since this is an "interrogative" sentence, Hence we will use first form of the verb

 "Last 10 years" denote past tense. Since, this is the case of past perfect continous tense , hence 3 is correct.

 Since this is the cse of simple past tense , he is singulare so it will take singular verb.

 "Whenever we talk about establishment we use "founded"

This is the case of present prefect continous tense, hence 2 is correct

The sentence requires past tense because 'yesterday' indicates a completed action. 'Did not meet' is the correct simple past tense form. Option A is incorrect because 'not meet' lacks a verb. Option C uses present perfect tense which doesn't match the past time marker.

The first blank requires past tense 'met' because it describes a completed action. The second blank uses past continuous 'was studying' to show an ongoing action when the first event occurred. Options A, C, and D fail to maintain proper tense sequence.