Eggs are sold by ________ dozen while the meat is charged by ________ weight.
A．the；the B．the；/ C．/；the D．/；/
Last Sunday，we took ________ guided walk around by ________ signs of the famous town.
A．the；the B．a；/
C．the；/ D．a；the
________ China's growth is not ________ threat to others.On ________ contrary, it will bring more opportunities to the world.
A．The；a；/ B．The；/；the C．/；a；/ D．/；a；the
Obama has been elected ________ first black President of the United States, and the international society expects to have ________ new USA under his leadership.
A．/；the B．a；the C．the；a D．the；the
The biggest whale is ________ blue whale，which grows to be about 29 meters long—the height of ________ 9－story building.
A．the；the B．a；a C．a；the D．the；a
What I need is ______ book that contains ________ ABC of oil painting.
A．a；/ B．the；/ C．the；an D．a；the
