Question

I shall finish my work before christmas *change into past perfect​

Answer 1

Answer:

Explanation:

To form the past perfect tense you use the past tense of the verb "to have," which is had, and add it to the past participle of the main verb. For example: subject + had + past participle = past perfect tense.

Answer 2

Answer:

I should have finished my work before Christmas.

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