Salena, stop goofing off in chemistry or you will fail the final exam!

莎莲娜，别在化学课上混日子了，不然你期末考试会不及格的！

youdao

Salena, stop goofing off in chemistry or you will fail the final exam!

莎莲娜，别在化学课上混日子了，不然你期末考试会不及格的！

youdao