—They are discussing what to do for the disabled. 
— _______ is necessary to provide them with more positions.

A. That
B. This
C. It
D. There
C
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科目：初中英語 來源：模擬題 題型：單選題

—They are discussing what to do for the disabled. 
— _______ is necessary to provide them with more positions.
[     ]
A. That
B. This
C. It
D. There

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