Question

then I made a mistake complex sentence​

Answer 1

Explanation:

Simple sentences- contain only one clause(verb group)

Compound sentences - consist of more than one clause.A compound sentence is formed by using one or more subordinate verbs to the main clause using conjunctions or relative pronoun.

A simple sentences can be converted into a complex or compound sentence by using a word or phrase as the subordinate clause.This could be a noun, adjective or adverb clause.

e.g.:-It rained for three days.The streets in my neighborhood flooded.(Simple sentence)

-It rained for three days so the streets in my neighborhood flooded.

Similarly, for the given sentence,"then I made a mistake",

There should be some words or phrases to change the sentence into complex sentence.

i.e.-It was the time I made a mistake.

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Answer 2

Answer:

Explanation:then I made a mistake