[解析]
11.A 12.C 13.C
M:Are you sure it's safe to drive in this fog?You might lose all sense of direction when you drive through the forest.
W:It should be okay.It's just coming in from the sea.Once I'm on the road,it should clear.
M:How long do you think you'll be driving?
W:Well,it's a six﹣hour trip,but I'll stop for lunch and a coffee to keep me awake.
M:And when will you come back?
W:Probably on Sunday,or maybe on Monday.It depends on whether I get the photos I need.And if it rains,I might need an extra day.It's dangerous to climb mountains after raining.
M:Okay.Are you sure you don't need my help?
W:No,I'll be fine on my own.
M:Call me once you get to your hotel.
W:I will.It's up in the mountains so the signal might not be great.But I'll try my best.
M:They'll have Internet access.If you can't call,just send me an email.
W:Will do.
M:Okay,take care.
W:Bye.