The president spoke at the business meeting for nearly an hour without _________ his notes.
| A．bringing up | B．referring to | C．reacting to | D．trying on |
Do you brush ___ every day?
| A．your tooth | B．your tooths | C．your teeth | D．teeth |
Many people are still in __ habit of writing silly things in __ puplic places.
| A．the…the | B．/…/ | C．the…./ | D．/…the |
Beyond ___stars, the astronaut saw nothing but ___ space.
| A．/…the | B．/…/ | C．the…/ | D．the…the |
Biology is ___.
| A．science of life | B．science of the life | C．the science of the life | D．the science of life |
Miss Smith is a close friend of ___.
| A．Mary mother’s | B．Mary mother | C．Mary’s mother’s | D．Mary’s mother’s |