Do you know__________? –He came here by train.
— It only takes me 20 minutes to get here by bike. Why don’t you ride a bike as I do?— . I’m afraid I’ll have to ride a bike.
I can’t tell when that house exactly, but it must be very long ago.
— you out the physics problem, Kathy?— Not yet, but I’m going to.
— John, could you please the black-board now? It’s your duty today.— OK. I’ll do it right away.
— You used to the bus to school, didn’t you?— Yes, I did. However, I am used to to school now.