THOUSANDS OF STEEL _____ WERE USED AS THE FRAMEWORK OF THE NEW OFFICE BLOCK

Lớp 10 Tiếng Anh ĐỀ THI MÔN TIẾNG ANH LỚP 10 KỲ THI OLYMPIC TRUYỀN THỐNG 30/4

3. Thousands of steel _____ were used as the framework of the new office block.A. beams B. girders C. stakes D. piles