Penguins are usually dark in color, and have a white belly. These colors protect them (i) _______ other animals, such as killer whales and sea lions, which hunt penguins lor food. These animals often cannot tell penguins and water (ii) _______ When they look at the white belly of a penguin from below, they often mistake it for water. The dark (iii) _______ skin offers similar protection to penguins outside of the water. Penguins have a very special way of moving across land. They waddle; that is they make short steps and rock slowly back and forth (iv) _______ moving. They are mistakenly thought to be slow and clumsy, but in fact are very agile and (v) _______.
(v)___
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Lời giải:
Báo saiĐáp án D. lively: sôi nổi
Tính từ “agile” nhanh nhẹn, đứng sau “to be”, qua liên từ “and”, theo nguyên tắc song hành ta cũng dùng tính từ.