Excuse me , _______is the way to the nearest supermarket?

The mobile phone has influenced people’s life a lot since it ______.

You ________ stop when the traffic light turns red.

Can you tell me ___________________? You look upset.

There’s somebody at the door. Who ____ it be? Is it the postman? — No. It ______ be him. It’s just seven o’clock. It’s too early.