1. I haven't taken photographs for years.

2. I haven't watched TV since new year's day.

3. He hasn't written to me for 3 months.

4. I haven't been abroad since the summer of 1978.

5. That house hasn't been lived in for ten years.

6. I last saw him 2 months ago.

7. The last time i went to a concert was over a year ago.

8. I haven't enjoyed myself since your birthday party.

9. My father hasn't seen his brother for nearly 20 years.

10. How long is it since you learnt to drive?

Sao bn ko copy ảnh trong phần câu hỏi luôn ik ❓

28: 

\(m\perp n\)

\(n\perp p\)

Do đó: m//p

=>Chọn B

29:

m//n

\(p\perp n\)

Do đó: \(m\perp p\)

=>Chọn A

uk

1 what did you do to day?

I learned my lesson

2 what are you doing?

I'm playing chess

nếu câu 3 là cô ấy là ai thì bn thếu chữ is nhé :)

cảm ơn bạn nhé :>

Hoc24 vừa cập nhật cứ sao sao ấy, ko cập nhật ảnh bìa với ảnh đại diện được :<

\(\widehat{x'MC}=\widehat{xMN}\)(hai góc đối đỉnh

mà \(\widehat{xMN}=60^0\)

nên \(\widehat{x'MC}=60^0\)

Mz là phân giác của \(\widehat{x'MC}\)

=>\(\widehat{x'Mz}=\widehat{CMz}=\dfrac{60^0}{2}=30^0\)

Mz//Nt

=>\(\widehat{zMC}=\widehat{tNM}\)(hai góc đồng vị)

=>\(\widehat{tNM}=30^0\)

Nt là phân giác của góc y'NM

=>\(\widehat{y'NM}=2\cdot\widehat{tMN}=60^0\)