Chỉ ra chỗ sai và sửa lại
6, did you and your family at Jane's birthday party yesterday evening ?
8, I bought some warm boots because I would go skiing
9, the marathon runner has been running for almost two hours when he collapsed to the pavement
12, we were at home having our anniversary dinner when my uncle was calling to congratulate us last night
13, Mark took many trips to Asia since he started his own import-export business
17, the next important question we have to decide is when do we have to submit the proposal
18, with his father's guidance , Mozart begun playing the clavier at the age of three and composing when he was five
20, Mr.Davy was just getting off the plane when he feels a sharp pain in his chess
1, after taking the medication , the patient becomes drowsy and more manageable
7, my brother wants me to change the job and I am thinking he is right
8, so far this week the teachers are giving us a lot of homework everyday
9, there are more than 40 presidents of the United States since it becam a country
10, by the time he left the office , he have attended three meetings
11, he will go to lunch at noon and has a sandwich and a bowl of soup
14, by the time Phong arrived to help , we have already finished moving everything
15, we have lived since ten years , but we are going to move again soon
17, the hunter slowly raised his rifle and shoot at the deer, but he missed
18, Paul hid his money because he was afraid it would be stolen while he was being away
19, Tim has trouble with his car , so he has to take the bus to work three days
20, I think you have asked me five or six questions since we have begun this exercise
Nguyễn Nhật Minh??_Trang_??