Beijing is the capital of China and it isone of ______ cities in the world.

Little Johnny felt the bag, curious to know what it _______.

Do you think the problems in the physics test were difficult—Sure. I could ______ work them out.

I have a talk with one of your sportsreporters— Sorry, but all of them are out to________ the main events of the day.

It was several minutes _______ we realized what washappening~our dog was trapped in a newly-dug tunnel.