I am really worried about his grades in the coming test because of the little use he ______ of his spare time before it.

They stopped fighting but stood there, ____each other without saying anything.

 The teacher insisted that I ____ a mistake and insisted that I ____ the physics problem again.

He ______ at once when I promised to help him.

With world economic crisis worsening, people _______ the government for more unemployment benefits.