______ for two days, Steve managed to finish his report on schedule.
| A．To work | B．Worked |
| C．To be working | D．Having worked |
There are a small number of people involved, possibly ______twenty.
| A．as few as | B．as little as | C．as many as | D．as much as |
Only after Mary read her essay the second time the spelling mistake.
| A．did she notice. | B．she notice. |
| C．does she notice | D．she has noticed |
—Are you still mad at her?
—Not really, but I can’t ______ that her remarks hurt me.
| A．deny | B．refuse | C．reject | D．decline |
He had planned to make a compromise，buthe changed his mind at the last minute．
| A．therefore | B．otherwise | C．anyhow | D．somehow |
At our factory there are a few machines similar to ______ described in this magazine.
| A．them | B．these | C．those | D．ones |