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The city is 1,500 kilometers ______ our village.

Although _______ my opinion, the old professor didn’t come up with his own.

Let's learn to use the problem we are facing ______ a stepping-stone to future success．

His remark was considered to be quite ______, because it deepened the gap between two parties and caused more conflicts.

I am concerned ____ it that I can’t concentrate ____ my work because of headache.

I’m calling, ______my company, to thank you again for your generous help.

 Four teams of three people would compete ______ the game and the winners would receive a free vacation.

He always did well at school __________ having to do part-time jobs every now and then.

China has been pushing the reform of public hospitals           all its citizens. (2012福建)

On April 1, Jim tried to play a trick ______ his teacher but the teacher wasn’t taken _____.