To this happening again, John suggested that the source of all the water supplies .
A, stop, be examined B, keep, should be examined
C, prevent, examined D, stop, was examined
— Are you satisfied with his answer?
— Not at all. It couldn’t have been ______________.
| A．better | B．worse |
| C．more | D．less |
I’d appreciate ___________ if you could let me know in advance whether or not you will come.
| A．you | B．this | C．one | D．it |
— Why do you choose to work in an international travel agency?
— Well, you know, English is my ____________. So it is my best choice.
| A．strength | B．talent |
| C．ability | D．skill |
Tom is not_______as his brother.
| A．good as a student | B．as good a student |
| C．as a good student | D．a as good student |
The police _________ the mountain to ________ the murderer.
| A．is searching; search for |
| B．are searching for; search |
| C．is searching for; search |
| D．are searching; search for |