Question

He finished has project he went in a vacation(perfect particaple)​

Answer 1

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Having finished his project, he went in a vacation.

Explanation ↴

The process of combining two or more than two sentences into a single sentence is called Joining. Here, we have to join the two sentences into a Simple Sentence.

Here, we must use perfect participle because we can use participles to combine two sentences and this technique is used when both clauses have the same subject.

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Answer 2

Answer:

Having finished his project, he went in a vacation.

Hope its help you.