4. bus station (giữa dòng 1) they ran quickly to the bus station to catch a bus

5. Ben and Alex (giữa dòng 2) they started talking to two older children, Ben and Alex, who were with their parents

6. stories (cuối dòng 3) Grandpa Bill told the four children some very funny stories 

7. swimming pool (giữa dòng 6) we've got a swimming pool in the garden

`4.` bus station.

`-` Dẫn chứng: They ran quickly to the bus station to catch a bus.

`5.` Ben and Alex.

`-` Dẫn chứng: On the bus, they started talking to two older children, Ben and Alex, who were with their parents.

`=>` Tạm dịch: Trên xe buýt, họ bắt đầu nói chuyện với hai đứa trẻ lớn hơn, Ben và Alex, đang ở cùng bố mẹ chúng.

`6.` stories.

`-` Dẫn chứng: Grandpa Bill told the four children some very funny stories and they laughed a lot.

`7.` swimming pool.

`-` Dẫn chứng: We've got a swimming pool in the garden.