---Joan was badly injured in the accident yesterday and she was sent to hospital.---Oh, really? I______. I ______ visit her.
We all know the truth ___ there are air, water and sunlight there are living things.
It ________ Bob drives badly.
Is this ________ we met each other two years ago
"Do you know ________ " "His father is a doctor."
I have no idea ________ or not he has finished the work.