Ex2: Điền vào chỗ trống với giơí từ in , on , at
1 . ...... 1600 Pennsylvania Ave
2. ....... the gym
3 . ...... the farm
4 . ....... the airport
5 . ....... Ho Chi Minh city
6 . ........ the bus
7 . ....... the table
8 . ....... the party
9 . ........ London
10 . ....... school
11 . ....... the bathroom
12 . ....... page 100
1.on 2.in 3.on 4.at 5.in 6.on 7.on 8.at 9.at 10.at 11.in 12.on