1200 câu Trắc nghiệm tổng hợp Tiếng anh 10 - iLearn Smart World - Phần 3: Word form (có đáp án)
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One ___________ to environmental problems is to raise people’s awareness. (SOLVE)

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Write the correct forms of the words in brackets.

One ___________ to environmental problems is to raise people’s awareness.

(SOLVE)

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