Trắc nghiệm Chuyên đề 6: grammar (find the mistakes) có đáp án
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All of us are astonished that life in the countryside to improve a lot. A B C D

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All of us are astonished that life in the countryside to improve a lot.

               A                 B                        C                                D

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Giải thích

Chọn đáp án D (has improved)