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Nobody believed a 92-year-old man could run a marathon_______he passed the finishing line. People of all ages can challenge themselves.

The most interesting thing to the small boy was _______ he got close to the door, it would open of itself.

It seems ________ our team is going to win.

We were just about ready to leave _____ it started to snow.

Is this the young engineer ________ you want to have ________ the computer for me?

Scientists study ____ human brains work to make computers.

Besides the content of a book, ________ the editor also cares about is the number of readers.

In some places women are expected to earn money ________ men work at home and raise their children.

There were some chairs left over ________ everyone had sat down.

—Are you ready for Spain?
—Yes，I want the girls to experience that ________ they are young.