Error Identification: 18. Perhaps mankind’s( first) important (music) influence (was) the songs of (birds). A B C D 19. I (often) turn (off) the (heating) for (saving) money. A B C D 20. I’d like (to have taken) a holiday, (but) I (didn’t have) (too much) money. A B C D

2 câu trả lời

18. B. music ⇒ musical 

19. C. saving ⇒ to save

20. D. too much ⇒ enough

18. B -> musical

19. C -> heater

18. A -> to take

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