المشاركة الأصلية كتبت بواسطة angel khan

Which of the subordinate clauses in each of the following sentences is a relative clause?
a. relative clause b. not a relative clause
1. The machine which makes plastic bottles is broken.
2. The manager is upset about what the worker told him.
3. The problem is that he didn’t oil the machine.
4. The worker that forgot to oil the machine is speaking with
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