1. The bookstore is on the right of the photocopy store

=> The photocopy store is on the left of the  bookstore

2. The museum is behind the stadium

=> The stadium is in front of the museum

3. Hue's house is near the river

=> Hue's house isn't far from the river

4. Our school has a small yard

=> There is a small yard in our school

5. The hospital is in front of my house

=> My house is behind the hospital 

b)

First, you go straight ahead , then turn right and keep going straight . Take the second turning on the left, you can see a large yard , turn left and continue straight . Then, cross the street ,that's my school

1.The photocopy store is on the left 

2. The stadium is in front of the museum 

3. Hue's house isn't far the river

4. There is a small yard in our school

5 My house is behind my house

Ý b thì mình không biết nhưng ý a mình làm rồi , mong bạn xem xét cho.