At school，some students are active ________ some are shy，yet they can be good friends with one another.                                                    (2012·四川，4)

I had hardly got to the office________my wife phoned me to go back home at once.
(2012·大纲全国Ⅱ，11)

—Coach，can I continue with the training?
—Sorry，you can’t________you haven’t recovered from the knee injury.(2012·重庆，30)

________hard you try，it is difficult to lose weight without cutting down the amount you eat.                                                              (2012·湖南，32)

Everything was placed exactly________he wanted it for the graduation ceremony.
(2012·天津，14)

He smiled politely ________ Mary apologized for her drunken friends. (2012·山东，27)

I had no idea of the exact address of Xinhua High School ________I was outside its front gate.

John plays basketball well，________ his favorite sport is badminton.

If you are traveling ________ the customs are really foreign to your own，please do as the Romans do.

Don’t be afraid of asking your teachers for help ________it is needed.