问题补充:
Students continue to eat in school canteen they complain the quality of the food .
A. as though
B. even though
C. as long as
D. unless
答案:
A. as though
(答案→)B. even though
C. as long as
D. unless
解析:考查连词:A. as though好像B. even though即使C. as long as只要D. unless除非,句意:学生继续在学校餐厅吃饭,即使他们抱怨食物的质量。选B。