Поставьте правильный предлог 1. you must anger 2. i asked the children to stop shouting but they noise 3.she did her best to keep her 4. mary was finding it difficult to skhoolwotk

1. You must keep down your anger

2. I asked the children to stop shouting but they kept on making noise  

3. She did her best to keep her sorrow back.

4. Mary was finding it difficult to keep up with her schoolwork