Read the text carefully, then answer questions 16 to 20 below. Choose the answer that is correct according to the ideas in the text.
The expression "flat rate" (line 5) means a tax system that
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Read the text carefully, then answer questions 16 to 20 below. Choose the answer that is correct according to the ideas in the text.
The expression "flat rate" (line 5) means a tax system that
