Students continue to eat in school canteen they complain the quality of the food . A. as t

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。