We________ build our country into a country of peace，a country of wealth，a country of opening up．（　　）

A．mightB．shouldC．could

You can keep one of the old photos．________ of them．（　　）

A．NeitherB．BothC．Either

He knew his subject________ A to Z．（　　）

A．fromB．atC．on

Xiao Fang introduced herself to the new students in English in_________ lesson．（　　）

A．the firstB．atC．one

Be quiet! A bird ________ something on the window．（　　）

A．AreB．eatsC．is eating