the number of the stedents in our school---1000a have added up to b adds up to c has been added up to d is added up to选哪个 请说明理由

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the number of the stedents in our school---1000a have added up to b adds up to c has been added up to d is added up to选哪个 请说明理由

the number of the stedents in our school---1000a have added up to b adds up to c has been added up to d is added up to选哪个 请说明理由
the number of the stedents in our school---1000
a have added up to b adds up to c has been added up to d is added up to
选哪个 请说明理由

the number of the stedents in our school---1000a have added up to b adds up to c has been added up to d is added up to选哪个 请说明理由
D
be added up to 加起来有.
排出B
the number of不可数,排除A
说学校的人数,不需要用到完成时