should have: conditional of avoir + dû + infinitive

Question 1

I should have come.

Answer 1

J’aurais dû venir.

Question 2

You should have told him that you were ill.

Answer 2

Tu aurais dù lui dire que tu étais malade.

Question 3

He shouldn’t have eaten so much chocolate.

Answer 3

Il n’aurait pas dù manger tant de chocolat.