9. _____ the potential long-term health risks, it might be better to cut back on the use of bleach and disinfectants.
(A) Giving
(B) To given
(C) Given
(D) Be given
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統計: A(193), B(81), C(185), D(27), E(0) #3130941
統計: A(193), B(81), C(185), D(27), E(0) #3130941