30. Barack Obama told millions watching him that his grandmother’s influence on _______ he is and the way he views the world was significant.
| A．how | B．who | C．where | D．which |
It isn’t quite whether the teacher will collect the homework by Friday, so you needn’t hurry.
| A．sure | B．right | C．certain | D．exact |
The information he gave us was quite different from _______ we got ourselves.
| A．one | B．those | C．that | D．it |
He is so busy with the research he has no time left for any other activity.
| A．which | B．that | C．why | D．because |
Now that smoking great harm to you and people around you, you might as well .
| A．does; give it up | B．does; give it in |
| C．makes; give it up | D．makes; give it in |
Rock’n’roll was Black music that broke through to white culture when whites played the Blacks’ songs _______ the same style.
| A．with | B．on | C．in | D．by |