Whoever invented _______wheel is believed to have made ______most useful invention in _______history.
| A．a; the; / | B．the; the; / | C．the; a; / | D．a; a; the |
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 |
I was born in New Orleans,Louisiana,a city ___name will create a picture of beautiful trees and green grass in our mind
| A．which |
| B．of which |
| C．that |
| D．whose |