She didn't hand in her first two assignments for chemistry, which started her out in the class with a failing grade.
她头两次的化学作业都没有交，这使她开始这门课时成绩就不合格。
The First Class of Grade Two has 5groups of students, each group 5students. 21students participated in Chorus on International Children's Day. How many non-participants are there?
二年级一班有5组同学，平均每组有5个，“六一”节有21人参加合唱队。没参加合唱队的有多少人?。
The First Class of Grade Two has 5groups of students, each group 5students. 21students participated in Chorus on International Children's Day. How many non-participants are there?
二年级一班有5组同学，平均每组有5个，“六一”节有21人参加合唱队。没参加合唱队的有多少人?。
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