29．__________ when you are on the bus or bike．

—When can I call on you, afternoon or evening?
—________. I’ll be at home all the time.

Either he or I ______to the airport.

How much one enjoys himself travelling depends largely on_____he goes with，whether his friends or relatives．

The emergency generator or emergency battery is connected to _______on most large ships.

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_________．

______ on the New World, he felt like crying.

：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.

Virginius would feel more or less guilty when he______.

______no air or water, there would be no life in the world.