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?