下列划线字的读音全都正确的一项是（ ）

____, but it is also a good idea to reduce the potential dangers. [ ]

Are you free now? I’ve got something to tell you— Ok, ______ you make your story short

When I opened the door, I found my father sitting in his chair, completely ______ in a magazine.

I heard they went skiing in the mountains last winter. — It ___ true because there was little snow there.