Nearly a century later，extensive observations_______that elephants indeed remember injuries and hold hates against their abusers．
| A．confirmed | B．have confirmed |
| C．will confirm | D．had confirmed |
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 |