单项选择题
The invention of the microchip _______ a new generation...
单项选择题The invention of the microchip _______ a new generation of computers.
When he got married, Alf was too ______ to say anything...
单项选择题When he got married, Alf was too ______ to say anything to his wife about his job.
It is a _______ that the young look after the old in th...
单项选择题It is a _______ that the young look after the old in their family.
