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The young man helped the company recover , so his boss gave him an apartment ____. 

In 1862 the American black people won their struggle____ equal rights after many years’ fighting ________ the white.

Air quality in Beijing was rated as poor______ more than 5 million cars in the capital.

The Chinese mainlanders from selected cities are allowed to visit Taiwan______ individual tourists.

With everything needed________，she declared that the party began.

I guess we’ve already talked about this before but I’ll ask you again just __________.

__________cleaning the yard and making up the beds for the old，we also read newspapers for them and had chats with them.

The trade union intended to call on the workers to go on strike _______ the government’s limitation on exports.

It is amazing that the little boy can swim ________the river ________100 meters in width.

_____ the coach was twisting and turning _______ the bumpy country road, the travelers felt that they were pulling themselves apart.