老师安排了一次摸底测验，看看学生们在正式考试前的准备情况。

The teacher gave us a ___pre-test to check our preparation before the final exam.

老师决定先对部分学生进行一次预测试，以检查试卷的难度。

The teacher decided to ___pre-test some students to check the difficulty of the exam.