According to what he complained about, something must have gone wrong with the computer, ______?

(2014·厦门适应性考试)Mr Wang must have watched the film So Young last night，________？

－Excuse me, are you and Simon in Class 2, Grade 7? － _________.  He’s my classmate.

Nobody but I knows Japanese in my class,     ?

 —             does your school have the parents’ meeting?— Twice a year.