Answer :

1.The circumstances proved that there had been an obvious constraint of the human rights at school that day. 2. Her parents should not give up on her under the given circumstances. 3. Circumstances can be aggravating facts in legal terms. Circumstances are facts to be taken into account in law. 4. Constraint is a denial of the concept of freedom.
i only know how to say the first one in a sentence 
so in this circumstance i will have to tell you*