strict/serious rules it's our duty to do sth try one's best to do sth under someone's help remember a worse thing compare yourself with others face the challenge think about look up the dictionary break off the friendship
strict institution do...is our duty try one's best to do.. with the help of... the worst thing is... compare oneself with others face/meet challenges consider/think about.... look up dictionary suspend friendship
strict/serious rules it's our duty to do sth try to do sth under one's help think of worse things compare yourself with others face the challenge think over look up the dictionary break off the friendship