Only by improving education and high science technology can a country become a(n)________one.
They climbed to the top of the tower, ________they could see what was happening in the distance.
—Did you have a good time yesterday, Jane? ─Yes, as you know, ________ party went on in ________most pleasant atmosphere.
With a big family ________, the couple are living a hard life.
—________is it ________ had made our headteacher that angry? — Six of us being late this morning.
Many old Chinese people have the concept of ________ some money for their future use.