严格的校规限制了学生的课外活动。

The strict school rules are ___constraining students' extracurricular activities.

办公室里严格的规定让他感到很拘束。

The strict rules in the office felt ___constraining to him.

严格的规章制度限制了学生创造力的发挥。

The strict rules are ___constraining the students' creativity.