在实验开始前，所有参与者都完成了一个前测以评估他们的初始认知水平。

All participants completed a ___pretest before the experiment to evaluate their initial cognitive levels.

老师决定在小班预测试卷难度，以确保题目适合所有学生。

The teacher decided to ___pretest the exam with a small class to make sure the questions were suitable for all students.

老师让我们在正式考试前先做一次预测试。

The teacher asked us to take a ___pretest before the actual exam.