VI. Find a mistake in each sentence. 16. My father worked (A) in a noisy factory for (B) a long time, since (C) he suffered from hearing loss (D). 17. The River Thames flows (A) through southern (B) England and connect (C) London with (D) the sea. 18. Much (A) of the town was reconstruct (B) after (C) the tornado (D). 19. Look at (A) those (B) grey clouds! It will (C) rain soon (D). 20. Students might (A) only use the (B) laboratory once (C) a (D) week.

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