cần cực gấp tặng 20 xu
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29. If the villagers didn't dump households waste into the river, it
contaminated now.
less
D. being
C. could be
ill, she would join our activity to protect the local environment.
C. isa't
Exercise 5: Choose the underlined part that needs correcting in each sentence below.
31. Water pollution(A) is the contamination of bodies(B) of water(C) such(D) Inkes,
A will be
В. is
30. If Hoa
A wasa't
B. weren't
D. Both A&B
rivers, oceans, and groundwater.
32. Polluted(A) water also cause(B) the death(C) of aquatice(D) animals like fish or