Many boys enjoy _______ football, basketball or baseball

Even ______ Paul’s brother lives in Brazil, he has never been there

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

Which do you think is _________________important, health or wealth?

Terri: Derrick, don't you think you should take a vacation? Even one or two days would be fine.Derrick:__________ There's too much work.

：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（ ）。

Duty is an act or a course of action that people __________you to take by social customs, law or religion.

—Hurry up, or we’ll be late.—Take your time. it’s just ______ short distance from here to ______ cinema.

Insufficient ______ can cause a processor to work at 50% or even more below its performance potential.

______大学毕业以后的______，他说他想继续读书深造。

在北京大学改革中，蔡元培贯彻了“_______、_______”的办学原则。