Emily， you are playing video games again! Study hard， ______ you will fail in the coming
exam．（ ）
A．thenB．soC．andD．or
Be quiet! A bird ________ something on the window．（ ）
A．AreB．eatsC．is eating
Xiao Fang introduced herself to the new students in English in_________ lesson．（ ）
A．the firstB．atC．one
He knew his subject________ A to Z．（ ）
A．fromB．atC．on
You can keep one of the old photos．________ of them．（ ）
A．NeitherB．BothC．Either
We________ build our country into a country of peace，a country of wealth，a country of opening up．（ ）
A．mightB．shouldC．could