Bài 1 câu 9 đổi thành she. Bài 2 câu 3: we sometimes have the breakfast on street.

6. My classmate asked where the classrooms were.

S + asked + O + WH + S+ V (lùi thì) - câu tường thuật - dạng WH

HTĐ --> QKĐ

7. Trang asked what was on VTV6 that night.

S + asked + O + WH + S+ V (lùi thì) - câu tường thuật - dạng WH

HTĐ --> QKĐ

tonight --> that night 

9. Peter wanted to know where his sister / she was going.

S + wanted to know+ WH + S+ V (lùi thì) - câu tường thuật - dạng WH

HTTD --> QKTD

3. We sometimes have breakfast on the street.

ADV chỉ tần suất + V 

have breakfast: ăn sáng 

5. Venus is the second planet from the Sun.

S số ít + is + ADJ / N 

the second planet: hành tinh thứ 2 

`color{orange}{~MiaMB~}`