If the laboratory ____ more funding, it would purchase a new microscope.

Answer and explanation

Correct answer: A. received

  1. Step 1: The main clause uses 'would purchase', so this is a second conditional about an unlikely present or future situation. Step 2. The if-clause of a second conditional takes the simple past. Answer: received. Why not the others: 'will receive' belongs to a first conditional; 'had received' belongs to a third conditional about the past; 'would receive' cannot stand in an if-clause here.

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