问题补充:
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:
A. even if
B. if only
(答案→)C. in case
D. when
解析:
这题考查连词的用法:even if即使, if only但愿,in case以防,when当…时候,句意是:学生被要求成对和朋友外出,尤其在晚上,以防有麻烦。选C。