Trắc nghiệm: In the past. the trip _______ very rough and often dangerous. but things _______ a great deal in the last hundred and fifty years. | Gửi trắc nghiệm |
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Trắc nghiệm: In the past. the trip _______ very rough and often dangerous. but things _______ a great deal in the last hundred and fifty years. | Gửi trắc nghiệm |