Final answer:
The correct verb phrase to complete the sentence is 'hubiéramos esforzado'.
Step-by-step explanation:
The correct verb phrase that completes the sentence is hubiéramos esforzado.
In this sentence, the subject is nosotros, which means 'we' in English. The verb phrase is formed using the verb 'esforzado', which means 'to make an effort'. When conjugated in the past subjunctive form for nosotros, it becomes 'esforzados'. To form the conditional perfect tense, we need to use the auxiliary verb 'haber' in the imperfect subjunctive form, which is hubiéramos. So, the correct verb phrase is 'hubiéramos esforzado'.
Example: Ojalá que nosotros nos hubiéramos esforzado más en nuestros estudios.
Learn more about Conjugation of Spanish verb phrases