__________ is the act performed by or resulting from saying something; it is the consequence of, or the change brought about by the utterance.

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、

双极性晶体管是_____ 控制元器件,而场效应管是______控制元器件。

双极性晶体管是_____ 控制元器件,而场效应管是______控制元器件。(本40

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.

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.