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Question

Difficulty: EasyVerbs, Tenses, and Aspect

Complete the following sentence by providing the correct tense of the verb in brackets.

Answer:By the time the principal arrives at the auditorium tomorrow morning, the students 【will have finished】 their rehearsals.

Answer

will have finished
The future perfect tense 'will have finished' is required because the sentence describes an action that will be completed prior to a specific point in the future introduced by 'By the time'.

Step-by-Step Solution

1
Analyze the time indicator and clause structure of the sentence.
The time phrase 'By the time...' introduces a future reference point marked by the present tense verb 'arrives'.
When an action will be completed before a specified future time or event, the future perfect tense is required.
2
Formulate the correct verb structure for future completion.
Combine the auxiliary verb 'will have' with the past participle form of the verb, yielding 'will have finished'.
The future perfect structure consists of 'will + have + past participle'.

Key Concept

Future Perfect Tense and Aspect
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Topics

Verbs, Tenses, and Aspect

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