4

It is 3 o’clock now, and our meeting starts at 4.

Our meeting starts at 4, but I am still at home.

The male neighbor on floor 2 helps me sometimes, and the female neighbor on floor 4 always helps me.

I am at the office until 4.

The delivery person said that the delivery would arrive between 2 and 4, so I stayed home.

The office closes at 5, but on Thursday it closes already at 4.