在PowerPoint 2010环境中，插入一张新幻灯片的快捷键是______。

Many boys enjoy _______ football, basketball or baseball

Which do you think is ________, health or wealth？

_______________will not continue if an ongoing operation is changed or deletedA、

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

Which do you think is _________________important, health or wealth?

And they can ______their passports______，making leaving or “escaping” virtually impossible.

在PowerPoint中，停止幻灯片播放的快捷键是______。

Either he or I ______to the airport.

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

Hurry up, or you ______ catch the train.

PowerPoint中，要终止幻灯片的放映，应使用的快捷键是________。