I had some problems _____ myhomework.

Have you seen the film Roman Holiday—Yes. It’s so wonderful and Audrey Hepburn won the Oscar ______ Best Actress _____ her role in this film .

The manager promised to keep us _____ of how our business was going on.

I have no idea ________ or not he hasfinished the work.

I think English is useful language,and it’s also important language.