They _ the house by the time you arrive.
Correct answer: C. Will have cleaned
- A. Will clean
- B. Have cleaned
- C. Will have cleaned
- D. Cleaned
Explanation
The correct answer is 'will have cleaned', which uses the future perfect tense. This tense is appropriate because it indicates an action that will be completed before a specific time in the future ('by the time you arrive'). The other options are incorrect because they either fail to convey the completion of the action before another future event or use inappropriate tenses for the context: 'will clean' suggests a future action without completion, 'have cleaned' implies completion before now, and 'cleaned' refers to a past action.
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Tenses show when an action or state occurs and whether it is complete, continuing or repeated. The work covers present, past and future forms, including simple, continuous, perfect and perfect continuous constructions, as well as sequence of tenses and the difference between tense and aspect.
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