12. Mr. White works with an imp
ort and export company, but he ______ for this industrial fair, s
ince he is on leave.
| A．has worked | B．works |
| C．has been working | D．is working |
with the size of the whole earth , the biggest ocean does not seem big at all .
| A．Compare | B．When comparing |
| C．Comparing | D．When compared |
It was back home after the experiment.
| A．not until midnight did he go | B．until midnight that he didn’t go |
| C．not until midnight that he went | D．until midnight when he didn’t go |
He kept looking at her, wondering whether he her somewhere.
| A．saw | B．has seen | C．sees | D．had seen |
---How long has your brother been working here?
---_______ he graduated from college in 2007.
| A．When | B．Until | C．Long before | D．Ever since |
Tom insisted what he said ______ true, but we insisted that he _____ and have a look.
| A．be, should go | B．should be, would go | C．was, go | D．was, would go |