Each time ________ they met, they would talk long hours together.

He is very old, ______ he still works very hard.

__________ attracts movie goers in the film Avatar is its vivid three-dimension effect (三维效果) , grand war scenes and touching love story.

The government has taken some measures to solve the problem of unemployment, but it may be some time ______ the situation becomes better.

—What do you think I should wear for such a formal press conference?—Dress _______ you like.