If it ______ rain tomorrow, I will go to the park. [ ]

Excuse me. Where is Lily? —Oh, she _______ the volleyball match on the playground when I saw him just now.

Everyone knows ______ Olympic Games will be held in London in July, 2012.

Elvis Presley has sold more than one______ records all his life.

Look! Mrs. Green is talking ____ the students of ClassⅠon the ground. [ ]