It hasn’t been ______ that food from cloned animals is really safe for humans to eat.
| A．confirmed | B．considered |
| C．turned out | D．proved |
---Mr. Jones isn’t at his desk. Where is he?
---_______. I have no idea.
| A．You are welcome | B．Tell me about it |
| C．Let’s call it a day | D．You’ve got me there |
A smile ______ the mother’s face when the son walked onto the platform to receive the prize.
| A．lit up | B．brought up |
| C．put up | D．took up |
My teacher speaks English well indeed, but of course not __ a native speaker.
| A．as fluent as | B．more fluent than |
| C．so fluently as | D．much fluently than |
The Well Hotel stands in a quiet place ______ the main road at the far end of the lake.
| A．to | B．for | C．off | D．out |
--- Why wasn’t John hired for the job ?
--- I don’t know, but he ______.
| A．was | B．had been |
| C．should have | D．should have been |