Lily, is this _________ ipad? –No, it’s not mine. I think it’s Lucy’s.

All the cars ________ stop when the traffic light is red.

I like to sit __________ the bus.[ ]

If(如果) you’re new in a big city, you cana policeman for help.

“______ can you stay here in the summer holidays?” “For two weeks.” 　　 [ ]