题目内容
单词组句
them, to, warm, it, keep, helps
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use, we, for, them, tables, making
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them, walls, let, the, of, our, decorate, classroom
them; women; none; were; of;
1．much; woollen; a; is; how; scarf
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2．leaves, them; food, are; fruit; the; flowers; for; and
3．both, and; insects, forests; provide; and; shelter; food; for; animals
4．all; living; important; Earth; to; forests; are; things; the; on
5．down; trees; we; stop; cutting; must; the
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