9. Raw (A) materials that used to (B) make cars (C) include iron ore, rubber, and (D) petroleum.
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2 câu trả lời 261
The sentence has a small grammatical issue. Here’s the corrected version:
**Original:**
"Raw (A) materials that used to (B) make cars (C) include iron ore, rubber, and (D) petroleum."
**Corrected:**
"Raw (A) materials that **are used** to (B) make cars (C) include iron ore, rubber, and (D) petroleum."
### Explanation:
- **(A) "Raw"**: This is correct as it describes the materials in their initial state.
- **(B) "used"**: To be grammatically correct, it should be "are used" instead of "used" alone to properly agree with "materials" which is plural.
- **(C) "make cars"**: This is correct.
- **(D) "petroleum"**: This is correct.
The corrected sentence ensures proper subject-verb agreement and clarity.
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