... THE SURFACE OF METAL, BUT ALSO WEAKENS IT.(A) NOT ONLY DOES R...

459. - De thi trac nghiem TOEIC tong hop
De thi trac nghiem TOEIC tong hop
459. ... the surface of metal, but also weakens it.(A) Not only does rust corrode(B) Not only rust corrode(C) Rust, which not only corrode(D) Rust not only corrodes