With so much noise of the traffic, I couldn’t ______ and do my research work．
| A．put down | B．settle down | C．break down | D．take down |
With his eyes ________ the work attentively, he didn’t know what was happening outside.
| A．focusing on | B．focused on | C．fixing on | D．to fix on |
The poor woman had not slept all night and was completely _________.
| A．burnt out | B．reached out | C．watched out | D．turned out |
________ they are my neighbors, I don’t know them well.
| A．While | B．Despite | C．As | D．Now that |
Who is ______ that is _______ for the terrible mistake?
| A．he; to blame | B．it; to blame | C．he; to be blamed | D．it; to be blamed |
The production of cars of this company has increased ______ 300, 000 a year, but the sales of new cars have fallen ______ 20 percent this year.
| A．to; with | B．to; by | C．in; to | D．in; by |