_______ at all is worth doing well.

He declined _______ more about it.

On average about ￡5000 a year is spent on each private school pupil,_______ the amount spent on state school pupils.

So far scientists have only acquired ________ understanding of the physical processes that cause earthquakes.

在将U盘插入计算机后，应该及时将自己的U盘加锁。

在上课时，我们老师可以将自己与该课程相关的软件装在计算机的任何磁盘分区中。

People appreciate _______ with him because he is knowledgeable and humorous.

上每一课程时，应该把自己的所做的课件、教案、以及与本课程有关的所有文档、视频、音频等资料拷贝到计算机的E盘分区。

It is obvious how bad movies will impact ________ children.

To a worker, ________ from the point of view of society is necessary labor is from his own point of view voluntary play.