. He pretended _______ nothing about it.
—Mary said Leo worked really hard.— _______.
— I regret _______ you that you failed the exam.— How I regret _______ so much time playing computer games.
The doctor insisted that the patient ______ seriously ill and that an operation _____ in no time.
When you’ve finished with that book, don’t forget to put it back on the shelf, _______?
I don’t think that the necklace is made of diamond, _______?