It is believed thatintelligence is to _____ extent _____ we are born with

I am sorry I didn’t hear you clearly. _____you repeat it please?

China is still an agricultural country andpeasants ________ most of the population

Walking up and down the stairs is a goodkind of exercise to stay _____.

Is it that Jack often plays computer gamesmakes his parents worry about him ?—Yes , I think so .