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Question 1

If steel gets hot enough, it ___ in size.

  1. will expand
  2. expanded
  3. expandsCorrect answer
  4. would expand

Explanation

Expands is right because the sentence states a general physical property rather than one future event. Will expand would turn the result into a prediction about a particular occasion.

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Question 1: If steel gets hot enough, it ___ in size. · English Conditionals · Questena