'No sooner' is always followed by ‘Than’ and the verb comes before the subject. Thus, the sentence is grammatically and contextually correct. Thus, the correct formation would be, ‘No sooner had he completed his first novel than he fell seriously ill’.

The phrase ‘has been thrusted’ is grammatically correct. This is because, when someone is forced to accept or deal with, this form of verb is used. Thus, the correct formation would be, ‘Heavy work has been thrust on me’.

Ascent’ means upward moment and is incorrect as per the meaning of the sentence. ‘Accent’ means to emphasize a particular feature; ‘Approof’ means trial, and ‘Assent’ means to give an expression of approval or agreement. Thus, ‘Ascent’ needs to be replaced with ‘Assent’ Thus, the correct formation would be, ‘My father has given his assent for my long tour’.

The sentence is grammatically and contextually correct. This is because, the verb, ‘to look forward to’ means toanticipate. It requires a direct object and it will be the gerund form of the verb i.e. ‘meeting’. Thus, the correct formation would be, ‘My brother is looking forward to meeting his employer tomorrow’.

Modal ‘can’ needs to be replaced with ‘could’ to make the sentence grammatically correct.‘Could’ is used to express power and possibility in past tense. Thus, the correct formation would be, ‘I wish I could help you’.