----Hi, can I speak to Mr. Brown now?
----Sorry, but he is not ______. He’s having a meeting now.
| A．accessible | B．available | C．convenient | D．vacant |
I am familiar with his work and look forward to of his view on literary and artistic creation.
| A．informing | B．be informed | C．being informed | D．have informed |
To read newspapers before going to bed seemed to be a rule _____.
| A．never to be broken | B．never to have broken |
| C．never to be breaking | D．to never break |
The danger of 
HINI was real, especially in the beginning, little was known about the new disease.
| A．if | B．because | C．when | D．before |
For those who don’t have to safe water, life is a constant struggle.
| A．approach | B．access | C．way | D．passage |
All over the world the mobile phone has leaped from being an impossible luxury in the early 1980s to most people would now call a necessity.
| A．which | B．that | C．what | D．when |