A．dating back B．dated back toC．dating back to D．dated f……

单项选择题Every year a flood of farmers arrive in Shenzhen for money-making jobs they （） before leaving their hometowns.

A. promised
B. were promised
C. have promised
D. have been promised

单项选择题______ around the Water Cube, we were then taken to see the Bird's Nest for the 2008 Olympic Games.

单项选择题What the correspondent sent us is an ______ news report. We can depend on it.

单项选择题The period ranging from 1865 to 1914 has been referred to as ______ in the literary history of the United States.

单项选择题You ______ buy a gift, but you can if you want to.