There are ________ books in our school library；however，________ of them are old.
A．a large number of；fourfifth
B．a good number of；fourths five
C．the large number of；four fifths
D．a large number of；four fifths
Our government are taking firm measures to make pollution________.
A．to the end B．put to an end C．in the end D．without end
________ deep down in the earth，the dead forests rotted away and became coal.
A．Burying B．Buried C．To bury D．Having buried
—What happened to the priceless works of art?
—________.
A．They were destroyed in the earthquake
B．The earthquake was destroying them
C．They destroyed in the earthquake
D．The earthquake were to destroy them
—What happened?
—Oh，a bee appeared on Kate’s dress，and her sudden________ of cry scared us.
A．break B．burst C．attitude D．express
________our earth，or else it will be no longer fit for us to live on.
A．Protecte B．To protect C．Protecting D．Protect
