We must __________ that the experiment is controlled as rigidly as possible.
| A．propose | B．secure | C．ensure | D．Issue |
The teacher ______ have thought Johnson was worth it or she wouldn’t have wasted time on him.
| A．should | B．can | C．would | D．must[来 |
Most smokers say they _______ smoking to some degree but health experts suggest that they should give it up ______ their health.
| A．benefit; for the benefit of | B．benefit from; with the benefit of |
| C．benefit; in the benefit of | D．benefit from; for the benefit of |
Next week’s film festival should be a real _______ for cinema-goers.
| A．flash | B．sight | C．feast | D．scene[来源 |
— Shall I give you a ride as you live so far away?
—Thank you. _________.
| A．It couldn’t be better | B．Of course you can |
| C．If you like | D．it’s up to you |
Now that we’ve discussed our problem，are people satisfied with the decisions _______ ？
| A．taken | B．taking | C．to take | D．take |