---What will you do if it _____ rain tomorrow? --- I’m not sure.
Mr. Green ____________ to the manager now. You’d better call him later.
Tian’anmen Square is one of ____________ squares in the world.
There ____________ many students in the library after school every day.
Lee came to Beijing in 2005.He has been here ____________ than you.
My sister has two skirts. One is yellow,and____________ is black.