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If this computer does not give complete satisfaction, please return it to the maker stating when and where it was ________.
| A．designed | B．operated | C．purchased | D．made |
—I expected him to be nervous before his speech, but he was as cool as a cucumber.
—He _______ it carefully.
| A．could have prepared | B．shouldn’t have prepared |
| C．must have prepared | D．can’t have prepared |
The child had only _____ slight temperature，but the doctor regarded the illness as serious enough for ____ hospital treatment．
| A．/; the | B．/; / | C．a; / | D．a; the |
_________ many countries in Latin America have been trying to reduce gaps in income, America has allowed inequality to grow.
| A．While | B．Since | C．If | D．Where |
Much disappointed as he is _______ in the job interview, he still keeps his confidence.
| A．failed | B．to have failed | C．having failed | D．Failing |
The notice came around two in the afternoon ____the meeting would be postponed.
| A．when | B．that | C．whether | D．How |