Bài : Cho đa thức M = x³ + x²y - 2x² - xy - y² + 3y + x + 2017. Tính giá trị của đa thức M biết x + y - 2 = 0.

Help me !

C

B

Chuyển các câu sang phủ định và nghi vấn:

1. Her mother wrote a sick note for her

2. Nam was absent from school yesterday.

3. I had a bad cold two days ago.

4. Many students caught flu last month.

5. They were happy with their life.

6. He suggested going out for dinner.

7. I was busy last Sunday.

8. We enjoyed our summer vacation

VII. Hoàn thành các câu với do, don’t, does, doesn’t, did, didn’t

1. Her friends bought picture books, but she didn’t.

2. My mother didn’t watch the movie, but I did.

3. Hoa likes carrots, but her uncle doesn’t.

4. I don’t eat plenty vegetables, but my sister does.

5. We know how to use a computer, but they don’t.

6. My father doesn’t dink coffee, but my uncles do.

7. His parents didn’t eat spinach, but he did.

8. Ba does exercises every morning, but Nam doesn’t.