----- Nội dung dịch tự động từ ảnh ----- Exercise 2: Correct the mistake in the following sentences. 1. My father and I go skiing almost every day last winter. AB с D 2. What time has the train to Hai Phong leave? A B с D 3. Someone has been smoking in this room because it is dirty. A B C D 4. Look! Her eyes are red. She had been crying. A B с D 5. Don't worry, I hope everything is going to be fine soon. A B с D 6. Last year, my son was lost among the crowd while we have gone shopping. A B с D 7. Almost 300 million people had visited America's national parks every year. A B C D 8. They have studied English before they went to London. A B с D 9. They has got married for 30 years by the end of this month. A B с D 10. Up to now, there had been no woman being chosen the US president. A в с D