____________ Karen, tell her that she still owes me 50 dollars.
Explanation
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Theory
  • Present Simple or Present Perfect, and not future tenses, are used after the following words and expressions: while, before, after, until, till, as, unless, when, whenever, if, suppose, supposing, once, as soon as, as long as, by the time, in case, etc. He will give you a call as soon as he gets back home. We will be waiting for them at the airport when their plane lands.

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