It is illegal for a public official to ask people for gifts or money _______ favors to them[ ]

In the city of London, you can see fantastic modern architectures and antique buildings ________ eachother, ________ a sharp contrast between modern and ancient architectural styles[ ]

Chinahas got a good forfighting against the flu with its careful and smooth organization

He with his parents ____ to Shanghai once a year.

It was not until 1920 ___ regular radio broadcasts began.