Bộ 3 Đề kiểm tra Unit 8 - Tiếng anh 10 iLearn Smart World có đáp án (Đề 1)
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We should turn off the lights when we aren’t using them. We save electricity. → .............................

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For each question, combine two sentences using the First Conditional or Second Conditional.

We should turn off the lights when we aren’t using them. We save electricity.

→ .............................

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Giải thích

If we turn off the lights when we aren’t using them, we can save electricity./If we turn off the lights when we aren’t using them, we will save electricity./We will save electricity if we turn off the lights when we aren’t using them./We can save electricity if we turn off the lights when we aren’t using them.