As is known to all, _____USA is _____ biggest developed country in the world.
| A．the; 不填 | B．不填; the | C．the; the | D．不填; 不填 |
Do you brush ___ every day?
| A．your tooth | B．your tooths | C．your teeth | D．teeth |
That farmer has many ____ on the farm.
| A．geeses | B．gooses | C．goose | D．geese |
Deng Xiao Ping’s works ___ publihed.
| A．has been | B．have been | C．was | D．is |
This chemical works _____.
| A．is rebuilding | B．is being rebuilt | C．are being rebuilt | D．is being rebuilt |
The rice ___ cut three weeks ago.
| A．was | B．were | C．has been | D．have been |