No wonder you caught a cold. You ________out last night without a coat. —I know how silly I was.

It is not an idea____ the community can unite.On the contrary,I see it as one that will divide us.

Sir, physics is too difficult for me. —Tom, work hard, _______ you’ll find it easy.

Tiger Woods said that he needed to have his attention _____ on being a better husband, father and person.

Have you heard about that car accident near theschoolYes，luckily no one________．