—I don’t know why Tom was absent from yesterday’s meeting.
—He must have been sick, _______？
| A．isn’t he | B．didn’t he | C．wasn’t he | D．mustn’t he |
It’s really __________ comfort to the professor that his son has been admitted to __________ Harvard University．
| A．a , / | B．the ，/ | C．/ ，the | D．the，the |
In communication, a smile is usually __________ strong sign of a friendly and _______ open attitude.
| A．the, / | B．a, an | C．a, / | D．the, an |
（2011四川卷,18﹚Dr.Peter Spence, headmaster of the school, told us, “ fifth of pupils here go on to study at Oxford and Cambridge.”
| A．不填；A | B．不填；The | C．the; The | D．a; A |
（2011全国卷II,16﹚As he reached front door, Jack saw strange sight.
| A．the;不填 | B．a; the | C．不填a | D．the; a |
（2011全国卷,33﹚It is generally accepted that boy must learn to stand up and fight like man.
| A．a; a | B．a; the | C．the; the | D．a; 不填 |