Các cặp góc so le trong: A1 và B₃; A₄ và B₂; B₄ và C₂; A₄ và C₂.

Các cặp góc đồng vị: A₄ và B₄; 

\(460+85\) x \(4=\frac{x+175}{5}+30\)

 \(460+340=\frac{x+175}{5}+30\)

\(800=\frac{x+175}{5}+30\\ \frac{x+175}{5}=800-30\\ \frac{x+175}{5}=770\)

\(x+175=770\) x \(5\)

\(x+175=3850\\ x=3850-175\\ x=3675\)

1. Miss Van is a Journalist. She (not write) doesn't write for Laodong Newspaper. She (write)  writes for Nhandan Newspaper.

2. I'd like (Join) to join your club.

It's ten o'clock in the morning. We  (stay) are staying at home. I (play) am playing video games and my sister (read) is reading a book in her room.

3. How many books does your library (have) have , Lien?

+, It (have) has a lot, about one thousand.

4. In Vietnam, there (be) are no lessons on Saturday.

5. We (work)  worked until it (be) was dark.

how long  is it from here to there ?

long ---> far

it take me 20 minutes to get there

take ---> takes

how far isit from your school  to the library ?

isit ---> is it

linh is most beautifullin our class

Thiếu: Linh is the most beautiful in our class

this house is new but I need they nice

they ---> it

it takes me 10 hours to bring it

Câu này đúng!

 this house is more convenient in all room

in ---> than

room ---> rooms

Đó không phải là thì mà là câu điều kiện loại 2, ở lớp 7 sẽ học loại câu này.