Did it ever ________to you to contact the police when you saw the suspect

下列各句中，没有语病的一句是(　　)

fraid you missed a fantastic lecture yesterday. How come you were absent from it—If you _______ know, I asked for a day off and visited a relative of mine in hospital.

Do you play computer games—No，_______. I don’t like them at all.

Thomas wants to know .