摘要： As is mentioned above, the number of the students in senior high schools is increasing.
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________ is mentioned above , the number of the students in senior high schools is increasing.
[ ]
A．Which
B．As
C．That
D．It
________ is mentioned above, the number of the students in senior high schools is increasing.
[ ]
A．Which
B．As
C．That
D．It
________ is mentioned above, the number of the students in senior high schools is increasing.
[ ]
A．Which
B．As
C．That
D．It