John may phone tonight. I don't want to go out ______ he phones.
A.as long asB.in order thatC.in caseD.so that在线课程C
解析：
四个连词均可引起状语从句。as long as: “只要；
in order that/so that:”“以便、为了”；
in case:“以防、万一。”C项切题。