——the day went on,the weather got worse.A.as B.with C.since

特意查下牛津中阶词典,with的相关项：9because of sth;as a result of sth因为,由于：We were shivering(发抖） with cold.With all the problem we've got,we're not going to finish it on time.
8used to say how sth happens or is done:Open this parcel with care.to greet sb with a smile.
总结with 表示缘由或做事情的方式.
as 1while sth else is happen：The phone rang just as I was leaving the house.As she is walking along the road,she thought about her father.
4in a particular way,state,etc;like:Please do as I tell you.Leave the room as it is.Don't move anything.
as表同时或方式.
c,d两项就差得远了