A: its cloudy out side
B: really, oh no..i have to go to the book store
A: why dont you btmring umbrella?
B: i dont think so. i'm afraid the rain comes heavily
A: how about rain coat? it is safer
B: my rain coat is left in my grandpa's house
A; you can use my rain coat. i dont need it today
B: oh.. thats very kind of you