I. Reduce the following relative clauses or change to-infinitive or Participle phrases into relative clauses 2. Archaeologists have discovered signs of human activity that dates back almost 30,000 years cho mình xin lý thuyết để làm ạ

2 câu trả lời

Archaeologists have discovered signs of human activity dating back almost 30,000 years.

Archaeologists have discovered signs of human activity that dates back almost 30,000 years.

=> Archaeologists have discovered signs of human activity dating back almost 30,000 years.

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