Question

Max.
Fill in the blank.
If John
about Ruby's health issues, he would have helped her.
O
knows
Thing
O
know
had known
does know
Submit
Rese​

Answer 1

I think that knows is the correct answer

Answer 2

If John c) had known about Ruby's health issues, he would have helped her.

The correct answer is option c) had known.

Points to remember while answering such questions:

• Be careful about subject-verb agreement errors (Here, you cannot use ‘know’ with ‘Jack’; so, option b) is automatically incorrect)
• Pay attention to the tenses ( Here, the focus is on a event of the future, but in relation with the past; so, option a)  knows and c) does know are incorrect)
• Make sure that the sentence is grammatically correct  

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