______ the surface of metal, but also weakens it.
A. Rust, which not only corrodes
B. Not only rust corrodes
C. Not only does rust corrode
D. Rust not only corrodes
______ the surface of metal, but also weakens it.
A. Rust, which not only corrodes
B. Not only rust corrodes
C. Not only does rust corrode
D. Rust not only corrodes
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