问题
选择题
Students are required to go out in couples, especially in the evenings, with friends ______ they get into trouble.
A.even if
B.if only
C.in case
D.when
答案
答案:C
题目分析:考查短语辨析。A 即使;B要是...就好了;C,以防,万一;D当……时侯。根据句意可知此处强调以防万一的意思,所以答案选C。句意:学生被要求要成双成对的出入,尤其是在夜间,以防遇到麻烦。