Can you tell me _____it is from home to school? — Sure. It’s about three kilometers. [ ]

_________ he was, he still went on with his work.

I don’t know when he______ tomorrow .When he_____ , I’ll let you know.

Do you know the nearest way to the science museum?—Sorry, I’m a stranger. This is the first time I _________ here.

Your paintings are so great, David! When did you learn ______?—Three years ago.