Complete the sentences with appropriate preposition of place of time
( Hoàn thành các câu sau với giới từ chỉ thời gian đúng)
1. The members of the club clean the school playground___ Saturday mornings.
2. The students have to sit for the final exam ___June
3. Chu Van An Lower Secondary School is one of the most famous schools ___Ha Noi
4. The school canteen is ____the second floor
5. Which subjects do you like to study ____school?