The substance is very toxic. Protective clothing must be worn at all times. A. Since the substance is very toxic, so protective clothing must be worn at all times. B. The substance is suc

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The substance is very toxic. Protective clothing must be worn at all times.

Since the substance is very toxic, so protective clothing must be worn at all times.

The substance is such toxic that protective clothing must be worn at all times.

So toxic is the substance that protective clothing must be worn at all times.

The substance is too toxic to wear protective clothing at all times.

Giải thích

Cấu trúc: S + tobe + so + adj + that + mệnh đề

Tạm dịch: Chất độc hại đến mức quần áo bảo hộ phải được mặc mọi lúc.

Choose C.