Hurry up! Once the concert starts, _______ is allowed to enter the concert hall.
Many people shop on line, ________ years ago, they bought things only from stores.
He lives on ________ floor in that building.
You are not supposed to get off the bus ________ it stops.
My teacher encouraged me ________ more confident.
The taxis in this city ________ in the same color. You can see them every day.