----I’m sorry, but there is no smoking on this flight. ----Oh, I _____ that. Sorry, I won’t again.
| A．don’t know | B．didn’t know |
| C．won’t know | D．haven’t known |
Everthing we eat and drink contains some salt;we can meet the body’s need for it from natural sources without turning___the salt bottle
| A．to |
| B．over |
| C．on |
| D．up |
The boat___and threw us all in the water
| A．turned away |
| B．turned over |
| C．turned out |
| D．turned in |
___to the sun for too long can hurt your skin
| A．Being exposed |
| B．To expose |
| C．Exposing |
| D．Exposed |
Jack is late again.It is___of him to keep others waiting
| A．normal |
| B．ordinary |
| C．common |
| D．typical |
The system has been designed to give students quick and easy___to the digital resources of the library
| A．access |
| B．passage |
| C．way |
| D．approach |