I ___ from Mike for more than a week. hadn't heard
didn't hear
haven't heard
don't hear

Explanation:

I haven't heard ...

I is first person singular.

The irregular verb form to use is have (not) heard.

But I didn't hear is the past tense that is also correct.

I hadn't heard is also correct.

The only one that is really wrong is D.

wait is this a legit question?

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a(n) clause should always be separated from the rest of the sentence by commas.

a(n) independent clause should always be separated from the rest of the sentence by commas.

an independent clause is a clause that can stand alone as a sentence (i.e., it expresses a complete thought). an independent clause, like all clauses, has a subject and verb. when there are no dependent clauses in the same sentence as an independent clause, the independent clause is a simple sentence.

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