Question

the email earlier.
3We'll never know what might have happened
a.if he sent
b.had he sent
c. if he has sent
d.did he sent​

Answer 1

The answer is (B).

This is a third conditional sentence. In third conditional sentences, we can invert the auxiliary verb had and leave if out. Had we arrived = If we had arrived. The case here is called inversion.

Answer 2

Answer:

b.) We'll never know what might have happened if he had sent the email earlier.

Explanation:

In the case of past perfect tense, it tells us that an occasion occurred withinside the beyond earlier than every other occasion withinside the beyond. For example, the sentence Daniel had left by the point Erica were given to his residence makes use of the irritating to mention that Daniel left his residence earlier than Erica arrived.

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