There must be some reason for what he has done.

We could have done that.

What was I supposed to do?

I wish I had done more.

He could have done something.

You should have your house built by a trustworthy builder.

He did a lot for his people, but he could have done much more.

The theft must've been an inside job.

And I felt badly for not having done a good job.

What else could I have done?

What else could I have done?

I regret having done such a thing.

I shouldn't have done that.

Tom should've done something.

I wish I'd done the right thing.

I hope I did the right thing.

I don't remember having done that.

We therefore took revenge from them so We drowned them in the sea for they used to deny Our signs and were ignoring them.

So We took vengeance on them, and drowned them in the sea, for that they cried lies to Our signs and heeded them not.

Wherefore We took vengeance on them and drowned them in the sea, for they belied Our signs and were neglectful of them.

So We took retribution from them. We drowned them in the sea, because they belied Our Ayat (proofs, evidences, verses, lessons, signs, revelations, etc.) and were heedless about them.

So We took vengeance on them, and drowned them in the sea because they rejected Our signs, and paid no heed to them.

So We inflicted Our retribution on them, and caused them to drown in the sea because they gave the lie to Our signs and were heedless of them.

Therefore We took retribution from them therefore We drowned them in the sea because they denied Our revelations and were heedless of them.

So We took vengeance on them and drowned them in the sea, for they denied Our signs and were oblivious to them.

So We punished them and drowned them in the sea, for they had belied Our signs and gave no heed to them.

So We took retribution from them, and We drowned them in the sea because they denied Our signs and were heedless of them.

We took revenge on them for their rejecting Our miracles, by drowning them in the sea, but they were not aware of (reality).

Therefore We inflicted retribution on them and drowned them in the sea because they rejected Our signs and were heedless of them.

So We exacted retribution from them and drowned them in the sea, because they rejected Our signs and paid no heed to them

So We exacted retribution from them We drowned them in the sea, because they rejected Our Signs and failed to take warning from them.

I've done many things I shouldn't have.

What else could I have done?

I could have done better than he.

He can not have done that.

He cannot have done such a silly thing.

He should have taken the examination.

Mike can't have done such a thing.

Mike can't have done such a thing.

Tom shouldn't have done that.

Tom may be hurt.

I should've done this months ago.

She could not have done such a thing.

Tom has denied cheating.

I don't know what I should've done.