The car ran into a crowd of middle school students, ______to hospital immediately.

Meeting my uncle after all these years was an unforgettable moment, ________ I will always treasure.

Great inventors don’t ________ graduate from famous universities. Some didn’t even go to university.

We are proud of our hometown,which is in coal and natural crystal（水晶石）. A．abundant B．universalC．remote D．autonomous

We must ________ourselves _______our work.