Correct the mistake in the following sentences

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C | ERROR CORRECTION (Sửa lỗi sai)
Exercise 1: Correct the mistake in the following sentences.
1. We hasn't seen Dr. Jim since last Saturday.
C D
A
B
2. We were talking happily when Jane was coming in and shouted at us.
A
B
с
D
3. By this Thursday, our family will stay in Da Lat for 5 days.
A
B
C
D
4. While I did my homework, my sisters were watching cartoons.
A B
с
D
5. What will you do when they won't take on more employees?
A
B
C
D
6. He has been selling motorbikes since ten years.
A
B
с
D
7. I went to Ms Jen's company to see her but she has already come home.
A
B
с
D
8. I will be leaving my job by the end of this week as I have found another
B
C
D
A
better one.
9. Some people are believing that there is life on the Moon.
A
B
с
D
10. We will have walked to the bus stop at this time next morning.
A
B
C
D