For better sound effects, he was asked to speak ______ the microphone during the whole process．
| A．in | B．for |
| C．into | D．from |
The managing director took the _____ for the accident, althoughit was not really his fault.
| A．guilt | B．charge | C．blame | D．accusation |
He’d arrived20 minutesearly______I can have time for a cup of tea.
| A．as soon as | B．as a result | C．in case | D．so that |
The new secretary has written a remarkably _____ report only in a few pages but with all the details.
| A．concise | B．clear | C．precise | D．elaborate |
More than one-third of the Chinese in the United States live in California, _____ in San Francisco.
A. previously B. predominantly C practically D. permanently
---You are devoted herself_____ to her research and it earned her a good reputation in her field.
| A．strongly | B．extremely | C．entirely | D．freely |