----- I’m sorry I’m late. I got held up in the traffic on my way here.

----- ___________

A．Don’t be late next time

B．Never mind. Come and sit down

C．It doesn’t matter. I’m also late

D．You should be blamed

易于起火的液体物质，如丙酮、汽油、醇类、苯类、煤油、醚类等，必须与其他易燃物质分别保管在耐火材料仓库内。