. If law and order _____, neither the citizen nor his family is safe.
| A．are not preserved | B．is not preserved |
| C．were not preserved | D．have not been preserved |
—Mary was being badly treated when John happened to pass by and helped her out.
—I think it was not a pure ________but had been well planned.
| A．coincidence | B．consequence | C．incident | D．contradiction |
Huge quantities of information ________available on the internet, but whether the information ________ reliable needs to be further proved.
| A．is, is | B．are, is | C．is, are | D．are, are |
Had it been possible I would have gone to the movies, but I _______ busy.
| A．had been | B．am | C．was | D．would be |
Don’t be too general. Please give a ________suggestion on how to deal with this difficulty.
| A．specific | B．flexible | C．delicate | D．fragrant |
You are allowed to go out______ you promise to be back before 11 o'clock tonight.
| A．so long as | B．so far as | C．as soon as | D．as far as |