This volume is specifically designed to help students internalize English structures through repetitive practice. It typically covers:
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It depends on your country’s copyright law (usually life of author + 70 years). Thomson died in 1995, and Martinet died in 1999; their works enter the public domain in many countries by 2030. Until then, only authorized free copies (e.g., library borrow) are legal. Always check your local laws. and Martinet died in 1999