Paper is useful invention.Cai Lun invented it around 2,000 years ago.( )
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--What's your brother? ---He's a teacher. He art at a school。
Daniel, _______the other boys in our class, _______playing football.
The buildings _______ your school _______ modern.
My mother _______at 8 a.m. ________every Monday morning.
There is going to ___a parents’ meeting this evening. My father will take part in it.