Either he or I ______to the airport.

In ______, the only element that can be deleted or removed is the one that was inserted most recently.

Ifa teacher asks students to fill in the blanks in a passage with that, which or whom,he/she is least likely focusing on grammar at_________．

：不管外界对大学英语四、六级考试有怎样的非议，每年的四、六级考试还是_________地进行着，不少高校的学位证书仍然与大学英语四、六级考试挂钩着，大学英语四、六级考试成绩依然神气着……当大学英语四、六级考试_________成只为一纸证书考试时，大学英语四、六级考试就已经变得_________了。 填入画横线部分最恰当的一项是（ ）。

不管外界对大学英语四、六级考试有怎样的非议，每年的四、六级考试还是________地进行着，不少高校的学位证书仍然与大学英语四、六级考试挂钩着，大学英语四、六级考试成绩依然神气着……当大学英语四、六级考试________成只为一纸证书考试时，大学英语四、六级考试就已经变得________了。填入划横线部分最恰当的一项是（ ）。

The machine he originated and perfected has no modern _____ or ancient prototype.

Had he worked harder, he ______ the exam.

Had he worked harder, he _____ the exam.

By degrees the shutters were opened; the window-blinds were drawn up, and people began passing to and (1)____. Some few stopped to gaze at Oliver for a moment or two, or turned round to (2) st____ at him as they hurried by; but none relieved him, or troubled themselves to inquire how he came there. He had no heart to beg. And there he sat. He had been crouching on the step for some time, (3)____(wonder) at the great number of public-houses (every other house in Barnet was a tavern, large or small); gazing listlessly (4)____ the coaches as they passed through, and thinking how strange it seemed that they could do, with (5) e____, in a few hours, what it had taken him a whole week of courage and (6)____(determine) beyond his years to accomplish; when he was roused by observing that a boy, who had passed him carelessly some minutes before, had returned, and was now surveying him most (7)____(earnest) from the (8) o____ side of the way. He took little heed of this at first; but the boy remained in the same attitude of close observation so long, that Oliver (9)____(raise) his head, and returned his steady look. Upon this, the boy crossed over, and, (10) w____ close up to Oliver, said, “Hello! My covey, what’s the row?”

As he had heart attack, he was told that he _____ continue the work.

After the cameraman had taken three or four photographs of the soldier ants, he found they had ______ all over his feet.

The suspect _____ that he had not been in the neighborhood at the time of the crime.