Actually I'm doing a Grammar exercise that require me to identify mistake in a sentence. Here's the sentence:

(A)When hearing the weather forecast, we decide (B)not to go camping (C)in the (D) mountains.

The correct answer is A (when) It should be corrected to On hearing.

Could you explain the answer for me? I think V-ing is correct too...


When hearing the weather forecast, we decided not to go camping.

  • There's now way it is "we decided not to go for camping"; it's "we decided not to go camping."
    – Nick
    Oct 28 '17 at 2:45

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