---Have you seen _____ Audi car? I parked it here two hours ago, but now it’s gone!
---Is it _____ black one? A young man has just driven a black car away.
| A．an…a | B．the…the | C．the… a | D．an…the |
I wish to thank Professor Smith，without________help I would never have got this far.
(2012·天津，7)
| A．who | B．whose | C．whom | D．which |
The air quality in the city，________ is shown in the report，has improved over the past two months. (2012·福建，23)
| A．that | B．it |
| C．as | D．what |
We live in an age________more information is available with greater ease than ever before. (2012·浙江，9)
| A．why | B．when |
| C．to whom | D．on which |
A lot of language learning，________has been discovered，is happening in the first year of life，so parents should talk much to their children during that period. (2012·安徽，29)
| A．as | B．it |
| C．which | D．this |
After the flooding，people were suffering in that area，________urgently needed clean water，medicine and shelter to survive. (2012·江苏，22)
| A．which | B．who |
| C．where | D．what |