—Sorry, Madam. Any problem?
— Yes. The fish is served undercooked and with nothing .
| A．to add | B．adding | C．added | D．adds |
________ global temperatures rising, the UN Climate Change Conference was held in Cancun（坎昆）, Mexico last year．
| A．Prevented | B．Preventing |
| C．Having prevented | D．To prevent |
The young couple are trying to save as much as possible ________ they can afford a flat by the end of next year．
| A．so that | B．even though | C．in case | D．as if |
When I got to the checkout counter, I realized I didn’t have enough money, so I kept ________ I really needed and left the rest．
| A．what | B．which | C．that | D．this |
Although it was not named ________ 1782, this kind of metal was used as early as 5300 BC．
A．in B．for C．until D．since
--Who is late for class again?
--________ you ask? Tim, of course．
| A．Can | B．Would | C．Could | D．Need |