About_______of the engineers in me company were born in the_________．

___ he will come or not is_____ worries us.

He is ___________ to go to school now.

In his lecture, the professor referred to the belief, in contrast to all other countries, ______the elderly are wise, ______is particularly dominant in the Chinese culture．

Do you know ______ this dictionary belongs to? — Let me see. Oh, it’s _______.