7. It is good for us to doing exercises every morning.
8. He often goes to London by plane. 
9. I have three brothers and sisters. 

10. Although Phong was sleepy, he still stayed up late to watch the end of the game on TV.

7. It's good for us to doing excercises every morning. (đảo vế)

8. He often goes to London by plane. (flies to London: bay đến London, goes to London by plane: đi đến London bằng máy bay, hai câu đồng nghĩa)

9. I have three sibings. (Tôi có ba anh chị em ruột. ; siblings: anh chị em ruột)

10. Although Phong was sleepy, he still stayed up late to watch the end of the game on TV. (đảo vế)

Chúc bạn học tốt! ✪ ω ✪