Hi all,

I'm just wondering what would be the best phrase or word that best completes the following sentence.

"If only he ________ down the results when he did the experiments!"

(a) writes (b) had written (c) has written (d) was writing

Thanks for your help in advance!!

Swc, you really need to provide your answer first.
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I think "had written" might be correct, but i'm not sure
 Marius Hancu's reply was promoted to an answer.
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Yup. You can be sure now.


Had written because the sentence is conditional
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had written