1.My teacher likes to give surprise quizzes to see if we have done the assigned readings.
我老师喜欢突袭小考,看看我们有没有念指定的阅读作业。
2.A teacher proposed that let this freshman have a try , maybe he would give surprise.
有位老师提出,不如让这个一年级的学生来做做看,或许会有惊喜。