Ours is beautiful school with a long history,____ we are proud.
of which
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Theprimaryschool____(在孩提时代我在那里学习)hadverylittleequipment.
As is known to us all,the age_____children can go to school is seven.
Humanbeingsaresuperiortoanimals_____theycanuselanguageasatooltocommunicate.
Thank you for your help,_____ we could not have finished the work in time.
The time has come _____ we make extensive use of nuclear energy.