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83.be made of用……制成(看见原材料) be made from用……制成(看不见原材料)
用be made of 或be made from完成句子。
(1) The computer desk _____________ wood . (2) Paper ______________ wood .
(3) The red wine ____________ grapes . (4) Toothbrushes____________ plastic .
(5) Sweaters_______________ cotton . (6) Rulers_________________ steel .
(7) The bed _____________ iron . (8) Ink________________ carbon .