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Tashiro Posted 16 years ago
Grammar

Is

Hi, teachers. Please help me.

"Authorities do agree on what is the key properties of an addictive substance are."

This sentence is in a textbook for English learning.

I think 'is' is unnecessary. It's a typo?
  

Top answer

You're correct -- it must be a typo.

  • You're correct -- it must be a typo.
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2 Answers
0
You're correct -- it must be a typo.

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