68.
Choose the sentence only with irregular verbs.
Yalnız qaydasız fellər olan cümləni seçin.
Выберите предложение только с не правильными глаголами.
Electricity is the power that has made possible the engineering progress of today.
He made another important improvement, having invented a lamp that has been in use at present time.
We are ready to apply the knowledge we gained about electrons, vacuum tubes and transisters.
They will discuss amplifier circuits, or more specifically, audio amplifiers.
A triods requires three operating voltages, one on each electrode, to operate correctly.
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